TRC-50DX Instruction Manual ver July 2006

Instruction Manual

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File Name: trc-50dx_instruction_manual_ver_july_2006.pdf

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Page 1

TRC-50DX

INSTRUCTION MANUAL

RETINAL CAMERA

TRC-50DX

INTRODUCTION Thank you for purchasing the TOPCON TRC-50DX Retinal Camera. This instrument is used to observe, take pictures or record pictures of the posterior segment of the eye through the pupil. In Type IA of this instrument, the fluorescein angiography with indocyanine green is possible. This instrument has the following features: • This instrument assists the user in obtaining pictures of exceptional and stable quality. • The instrument is easier to use and operate than previous models. • A wide variety of optional accessories are available for diverse photographic and imaging purposes. This manual outlines the TRC-50DX Retinal Camera, including operating procedures, troubleshooting, maintenance and cleaning. Before using the instrument, carefully read the "DISPLAY FOR SAFE USE" and the "SAFETY CAUTIONS" to familiarize yourself with the features of the TRC-50DX Retinal Camera and to ensure that you operate it in an efficient and safe manner. Always keep this Instruction Manual at hand.

[Warning] Be careful not to bump the patient’s eyes or nose with the instrument during operation. [The patient may be injured.] This symbol is applicable for EU member countries only. To avoid potential negative consequences for the environment and possibly human health, this instrument should be disposed of (i) for EU member countries - in accordance with WEEE (Directive on Waste Electrical and Electronic Equipment), or (ii) for all other countries, in accordance with local disposal and recycling laws.

CAUTIONS FOR USE Basic caution When taking a picture, make sure that the patient keeps his/her hands away from the movable parts to avoid possible injury. Disposal When disposing of TRC-50DX parts, follow the local regulations for disposal and recycling. "Because prolonged intense light exposure can damage the retina, the use of the device for ocular examination should not be unnecessarily prolonged, and the brightness setting should not exceed what is needed to provide clear visualization of the target structures. This device should be used with filters that eliminate UV radiation (<400nm) and, whenever possible, filters that eliminate short-wavelength blue light (<420nm).

The retinal exposure dose for a photochemical hazard is a product of the radiance and the exposure time. If the value of radiance were reduced in half, twice the time would be needed to reach the maximum exposure limit. While no acute optical radiation hazards have been identified for fundus cameras, it is recommended that the intensity of light directed into the patient's eye be limited to the minimum level which is necessary for diagnosis. Infants, aphakes and persons with diseased eyes will be at greater risk. The risk may also be increased if the person being examined has had any exposure with the same instrument or any other ophthalmic instrument using a visible light source during the previous 24 hours. This will apply particularly if the eye has been exposed to retinal photography." "Caution: Federal laws restricts this device to the sale by or on the order of a physician."

ENVIRONMENTAL CONDITIONS FOR USE Temperature: 10°C ~ 40°C Humidity: 30% ~ 75% (Non-condensing) Air pressure: 700hPa ~ 1060hPa

STORAGE, USAGE PERIOD AND OTHERS 1. Environmental conditions (without package) Temperature: 10°C ~ 40°C Humidity: 30% ~ 75% (Non-condensing) Air pressure: 700hPa ~ 1060hPa 2. When storing the instrument, ensure that the following conditions are met: (1) The instrument must not be splashed with water. (2) Store the instrument away from environments where air pressure, temperature, humidity, ventilation, sunlight, dust, salty/sulfurous air, etc. could cause damage. (3) Do not store or transport the instrument on a slanted or uneven surface or in an area where it is subject to vibrations or instability. (4) Do not store the instrument where chemicals are stored or gas is generated. 3. Normal life span of the instrument: 8 years from delivery providing regular maintenance is performed [TOPCON data]

ENVIRONMENTAL CONDITIONS FOR PACKAGING IN TRANSPORTATION Temperature: -20°C ~ 50°C Humidity: 10% ~ 95%

CHECKPOINTS FOR MAINTENANCE 1. Periodically inspect the instrument and its parts. 2. Before using the instrument after a long period of inactivity, make sure that it operates safely and normally. 3. Be careful not to stain the objective lens with fingerprints, dirt, etc., as this will affect the coatings and quality of pictures that the instrument takes. 4. When the instrument is not in use, cap the objective lens and cover the instrument with the dust cover. 5. If the objective lens is stained, clean it according to "CLEANING THE OBJECTIVE LENS" on page 58 of this manual.

DISPLAY FOR SAFE USE To encourage safe and proper use and to prevent injuries to the operator and others or potential damage to property, important messages are put on the instrument body and inserted in the instruction manual. We suggest that everyone understand the meaning of the following displays, icons and text before reading the "SAFETY CAUTIONS" and observe all listed instructions.

DISPLAYS Display

Meaning

WARNING

Incorrect handling by ignoring this display may lead to a risk of death or serious injury.

CAUTION

Incorrect handling by ignoring this display may lead to personal injury or physical damage.

• Injury refers to cuts, bruises, burns, electric shock, etc. which do not require hospitalization or extended medical treatment. • Physical damage refers to extensive damage to the building, nearby equipment and/ or surrounding furniture.

ICONS Icon

Meaning Prohibition. Specific content is expressed with words or a picture near the icon. Mandatory Action Specific content is expressed with words or a picture near the icon. Caution Specific content is expressed with words or a picture near the icon.

SAFETY CAUTIONS WARNINGS Icon

Prevention item

Page

To avoid fire and electric shock in case of leakage, be sure to use a grounded receptacle. Do not connect to receptacles that are not grounded.

To avoid electric shock, do not attempt disassembling, rebuilding and/or repairs on your own. Ask your dealer for repairs.

Do not remove the external covers from the main unit, chinrest unit or power supply unit except for the lamp house cover. You may receive an electric shock.

To avoid electric shock when replacing the fuse, be sure to unplug the instrument before removing the fuse cover. Do not use ungrounded outlets. Do not plug in the instrument without the fuse cover.

To avoid fire in the event of an instrument malfunction, use only the fuses that are marked with the label at the side of the fuse holder.

To avoid fire and electric shock, install the instrument in a dry place free of water and other liquids.

-----

To avoid fire and electric shock, do not put cups or other containers with liquids near the instrument.

37, 39, 40

To avoid electric shock, do not insert metal objects into any vents and/or slots.

-----

Disconnect the power plug from the outlet before removing the lamp house cover. Electric shock may occur if you remove the lamp house cover without disconnecting the power plug. Do not connect the power plug to the outlet while the lamp house cover is not set on the instrument.

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To avoid fire in the event of an instrument malfunction, immediately turn OFF the power switch and unplug the cable if you see smoke coming from the instrument, etc. Ask your dealer for repairs.

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To avoid injury, remove the accessories of the UPPER mount before carrying the instrument. The instrument may tip over.

CAUTIONS Icon

Prevention item

Page

To prevent damage and injuries, do not install the instrument on an uneven, unsteady or sloped surface.

To avoid electric shock, do not handle the plugs with wet fingers.

To avoid discomfort or damage to the patient's eye, do not brighten the illumination lamp more than necessary.

To avoid discomfort or damage to the patient's eye, do not make a flash intensity level higher than necessary.

To avoid injury while inclining the instrument body, do not place your fingers into the gap between the instrument body and the 1st arm.

To avoid injury while moving the instrument body, do not place your fingers into the gap between the 1st/2nd arm and the chinrest column. *Please give proper instructions to the patient.

To avoid burns, do not replace the lamp with a new one immediately after it goes off. Allow time for it to cool.

To avoid electric shock, do not replace the xenon lamp with a new one immediately after it goes off.

To avoid injury while moving the base, do not place your fingers into the gap between the instrument base and the power supply unit.

Pay attention to the clearance between the objective lens and the patient. When the main body is moved, the objective lens may bump against the patient's eye or nose inflicting a minor injury.

CAUTIONS Icon

Prevention item

Page

To prevent falls and injury during transportation of the instrument, be sure to lock the base and arm by using the locking levers. This will prevent the instrument from moving and sliding.

-----

To avoid injury during carrying, be sure to hold the instrument body at the bottom with two people. Carrying by one person may cause backache or injury by falling. Holding at areas other than the bottom may also cause pinched fingers and injury, as well as falling, thereby causing damage to the instrument.

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To avoid falling and injury while moving the instrument on a rolling table, be sure to use an approved instrument table.

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To avoid injury while moving the chinrest up and down, instruct the patient to keep hands away from moving parts.

Be careful not to let the patient hold the column. His/her finger may be pinched between the column and 1st/2nd arm causing injury.

To avoid electric shock, be sure to turn the power switch off and unplug the power cord before replacing the lamp.

54, 55

Ensure that the 35mm camera is installed firmly by fastening the 35mm camera body locking lever. If installed loosely, the camera may fall off, resulting in severe damage to the unit and bodily injury.

When installing accessories, secure them firmly by fastening the accessory locking lever. If installed loosely, the accessories may fall off, leading to bodily injury.

This instrument has been tested (with 100-120V/200-240V) and found to comply with IEC60601-1-2: 2001. This instrument radiates radio frequency energy within standards and may affect other devices in the vicinity. If you have discovered that turning on/off the instrument affects other devices, we recommend that you change its position, keep a proper distance from other devices, or plug it into a different outlet. Please consult your authorized dealer if you have any additional questions.

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USAGE AND MAINTENANCE USAGE • The TRC-50DX Retinal Camera is an electric instrument for medical use. Use this instrument under a doctor's guidance.

USER MAINTENANCE To ensure the safety and performance of the instrument, all maintenance work, unless specified in this manual, shall be conducted by trained service engineers. The following maintenance tasks may be done by the user. For details, see the relevant part of this manual. Replacing lamps: The illumination lamp and Xenon lamp may be replaced by the user. For details, see "REPLACING THE ILLUMINATION LAMP" on page 54 and "REPLACING THE XENON LAMP" on page 55. Replacing fuses: The fuses on the instrument body may be replaced by the user. For details, see "REPLACING THE FUSE" on page 57. Cleaning the objective lens: The objective lens may be cleaned by the user. For details, see "CLEANING THE OBJECTIVE LENS" on page 60.

ESCAPE CLAUSES • TOPCON shall not take any responsibility for damage due to fire, earthquakes, actions by third persons and other accidents, or damage due to negligence and misuse by the user and any use under unusual conditions. • TOPCON shall not take any responsibility for damage derived from inability to properly use this instrument, such as loss of business profit and suspension of business. • TOPCON shall not take any responsibility for damage caused from using this instrument in a manner other than that described in this Instruction Manual. • Diagnoses made shall be the responsibility of pertaining doctors and TOPCON shall not take any responsibility for the results of such diagnoses.

WARNING DISPLAYS AND POSITIONS To ensure safety, this machine provides warning displays. Use the instrument correctly by observing the display instructions. If any of the following display labels are missing, contact your TOPCON dealer at the address listed on the back cover of this manual.

CAUTION y To avoid injury while operating the instrument, be careful to prevent your hand from being pinched by the movable parts.

CAUTION y To avoid injury to the patient while operating the instrument, be careful not to hit his/ her face with the instrument body.

WARNING y Before replacing the fuse with a new one, to avoid electric shock and fire, turn off the power switch and remove the power cable from the outlet. Be sure to use the correctly rated fuse for replacement.

WARNING y To avoid injury, remove the accessories of the UPPER mount before carrying the instrument. The instrument may tip over.

WARNING y Before replacing the lamp unit with a new one, turn off the power switch and remove the power cable from the outlet to avoid electric shock. TRC-50DX

CAUTION y To avoid burns, do not replace the lamp with a new one immediately after it goes off because it is still very hot and can cause burns.

CAUTION y To avoid electric shock, do not open the covers. Ask your service personnel for repairs.

CONTENTS INTRODUCTION ................................................................................................................1 CAUTIONS FOR USE ........................................................................................................1 ENVIRONMENTAL CONDITIONS FOR USE..................................................................... 2 STORAGE, USAGE PERIOD AND OTHERS..................................................................... 2 ENVIRONMENTAL CONDITIONS FOR PACKAGING IN TRANSPORTATION................. 2 CHECKPOINTS FOR MAINTENANCE ..............................................................................2 DISPLAY FOR SAFE USE..................................................................................................3 SAFETY CAUTIONS ..........................................................................................................4 USAGE AND MAINTENANCE............................................................................................7 USAGE ............................................................................................................................... 7 USER MAINTENANCE....................................................................................................... 7 ESCAPE CLAUSES............................................................................................................ 7 WARNING DISPLAYS AND POSITIONS ........................................................................... 8

NOMENCLATURE COMPONENTS OF MAIN UNIT.......................................................................................12 COMPOSITION OF PARTS WHICH CONTACT WITH THE HUMAN BODY...................14 COMPONENTS OF BASE UNIT ......................................................................................15 COMPONENTS ON CONTROL PANEL SCREEN...........................................................16 NAMES IN OPTICAL FINDER ..........................................................................................18 STANDARD ACCESSORIES ...........................................................................................19

SETUP CONNECTING THE POWER CORD ...............................................................................20 CONNECTING THE EXTERNAL DEVICE .......................................................................21 RESET FROM POWER SAVE STATE .............................................................................22 SETTING ON THE SET MENU DISPLAY ........................................................................23

BASIC OPERATIONS PREPARATION FOR PHOTOGRAPHY ...........................................................................28 PREPARATION OF THE PATIENT ...................................................................................30 COLOR PHOTOGRAPHY ................................................................................................32 FAG PHOTOGRAPHY ......................................................................................................37 ICG FLUORESCEIN PHOTOGRAPHY (ONLY IN TYPE IA)............................................39 RED FREE PHOTOGRAPHY WITH GREEN FILTER (ONLY IN RELEVANT PRODUCTS).................................................................................40 AUTO FLUO (AUTO FLUORESCENCE) PHOTOGRAPHY (ONLY IN RELEVANT PRODUCTS).................................................................................40

OBJECTIVE OPERATIONS PHOTOGRAPHY BY INCLINATION AND SWINGING.....................................................42 BLUE FILTER PHOTOGRAPHY.......................................................................................43 PHOTOGRAPHY WITH ALTERNATIVE FILTER (EXCLUDING TYPE IA).......................43 STEREO PHOTOGRAPHY ..............................................................................................44 INTERNAL FIXATION TARGET MOUNT (ONLY IN TYPE IA) .........................................45

BEFORE REQUESTING SERVICE TROUBLESHOOTING......................................................................................................46 ERROR CODE LIST .........................................................................................................49

SPECIFICATIONS AND PERFORMANCE SPECIFICATIONS ............................................................................................................50 ELECTRIC RATING ..........................................................................................................50 SYSTEM CLASSIFICATION.............................................................................................51 DIMENSIONS AND WEIGHT ...........................................................................................51 PURPOSE OF USE ..........................................................................................................51 OPERATION PRINCIPLE .................................................................................................52

MAINTENANCE DAILY CHECKUPS ...........................................................................................................53 ORDERING CONSUMABLES ..........................................................................................53 MAINTENANCE BY THE DEALER ..................................................................................53 REPLACING THE ILLUMINATION LAMP ........................................................................54 REPLACING THE XENON LAMP ....................................................................................55 REPLACING THE FUSE ..................................................................................................57 REFILLING THE CHINREST TISSUE PAPER .................................................................58 THE FAG FLUORESCEIN FILTER ...................................................................................58

CLEANING CLEANING THE EXTERNAL COVER, CONTROL PANEL AND OTHERS .....................60 CLEANING THE PARTS WHICH COME INTO CONTACT WITH THE PATIENT ............60 CLEANING THE OBJECTIVE LENS ................................................................................60 CLEANING THE LENS WHICH IS SEEN IN UPPER MOUNT ........................................61

OPTIONAL ACCESSORIES OPTIONAL ACCESSORY MOUNTING/DETACHING METHODS...................................63 ACCESSORY LENS CLEANING METHODS...................................................................67 1× RELAY LENS ADAPTER OR-2 ...................................................................................68 TV RELAY LENS ADAPTER.............................................................................................69

REFERENCE MATERIAL SHAPE OF PLUG .............................................................................................................71 SYMBOL ...........................................................................................................................71 USABLE AUTOMATIC INSTRUMENT TABLE .................................................................72 ELECTROMAGNETIC COMPATIBILITY ..........................................................................73

RELATION BETWEEN SETTING OF ILLUMINATION/FLASH LEVEL AND MAXIMUM RADIANCE..............................................................................................77 INFORMATION ABOUT THE OPTICAL RADIATION HAZARD FOR THE USER ....................................................................................................................78

NOMENCLATURE COMPONENTS OF MAIN UNIT Main unit

UPPER mount UPPER mount locking lever Diopter compensation lens selector Shading compensation cover Optical finder

Astigmatic correction knob External Cover Objective lens barrel

LOWER mount Objective lens Cable holder Internal fixation target mount

LOWER mount locking lever TRC-50DX

Angle changing lever Focusing knob Barrier filter cover

Internal fixation target mount (TYPE IA with split lines)

Filter switching knob Lamp house cover

Swing arm locking lever

Angle changing lever.............................. 50°, 35° or 20° may be selected as the angle of coverage. Diopter compensation lens selector ....... Used to compensate the dioptric power of strong myopia and hyperopia in the patient and also used for ocular anterior photography. Filter switching knob............................... Changed for different kinds of photography. UPPER mount........................................ Optional accessories (different types of relay lenses) are mounted here. Internal fixation target mount.................. Usable when the split lines are OFF. (Only in Type IA with split lines) Shading compensation cover................. Open this cover when cleaning the lens which is seen in the UPPER mount. Astigmatic correction knob ..................... Used when correcting the astigmatism degree of the patient. (Only in relevant products) Internal fixation target mount.................. The internal fixation target can be mounted. (This can be installed as an optional accessory in Type IA (without split lines), and as a standard accessory in Type IA (with split lines).)

12 NOMENCLATURE

"Horizontal" index window

Tilting unit

Inclination handle

Inclination rail Inclination brake knob 2nd arm

Base unit Control panel

1st arm

Photography switch

Base

Illumination level knob

Main unit connecting cord

Control lever Cover Level adjuster

Base unit connecting cord Power cord Fuse holder Power switch External connection terminal

DATA

CONTRO

TIMER

USB terminal DATA terminal

TIMER terminal CONTROL terminal

Photography switch........................ Press this switch, and the xenon lamp flashes and different types of photography are possible. Inclination handle ........................... Performs inclination in upper 15° and lower 10°. Inclination brake knob .................... Inclination is set to "free" or "lock" by turning this knob. 2nd arm .......................................... Swings up to 30° to the right and left. CONTROL terminal........................ Used to connect to IMAGEnet. DATA terminal ................................ Used to communicate with IMAGEnet. TIMER terminal .............................. Used to connect with the video timer. USB terminal .................................. Used to connect to IMAGEnet.

13 NOMENCLATURE

External fixation target

Chinrest unit

Forehead rest Canthus marker Headband Chinrest tissue pin Chinrest

Chinrest adjusting knob Column

Headband...................Used when fixing the patient's head. (Only in relevant products)

COMPOSITION OF PARTS WHICH CONTACT THE HUMAN BODY Forehead rest Chinrest Headband Chinrest adjusting knob Chinrest tissue pin Chinrest tissue

14 NOMENCLATURE

: Polyamide resin : Polyamide resin : Polyvinyl chloride resin : Polyacetal resin : Polyamide resin : Paper

COMPONENTS OF BASE UNIT UPPER/LOWER selector switch Flash correction switches Flash selector panel Control panel

Flash selector switch

TIME (Timer) switch Ba (Barrier) switch Ex (exciter) switch SPLIT switch SPLIT

TIME

Operation panel STEREO FREE

LOCK FREE

Illumination level knob

STEREO lever

Base fixing lever

Control panel.................................. On this touch panel, the set data are displayed and a variety of setting is done. Illumination level knob.................... Adjusts the illumination level according to the patient's eye. Ba (Barrier) switch.......................... Sets the barrier filter. Press this switch again, and the barrier filter is removed. TIME (Timer) switch ....................... Press this switch, and the timer starts. Press it again, and the timer stops. Ex (exciter) switch ......................... Sets the exciter filter. Press this switch again, and the exciter filter is removed. SPLIT switch .................................. Sets the internal fixation target to "OFF". Press this switch, and the split lines are set. Press this switch again, and the split lines are removed. (Only in relevant products) STEREO lever................................ Used for stereo photography. Refer to "STEREO PHOTOGRAPHY" on page 44 for details. Base fixing lever............................. Used to lock the base. UPPER/LOWER selector switch .... When UPPER is selected, photography by the UPPER set camera is possible. When in POWER SAVE mode, push this switch to reset the instrument. Flash selector switch...................... Photography light intensity can be selected in 11 steps. NF means no light emission from the xenon flash lamp. Flash correction switches............... Increase or decrease the preset light intensity. (It can be changed by 21 steps.) Press the button to increase it or the button to decrease it. For example, when the preset light quantity is 36W·s, one press of the button changes the setting to a value between 36W·s and 50W·s and turns on both switches (36) and (50).

15 NOMENCLATURE

COMPONENTS ON CONTROL PANEL SCREEN Setting operation display (Example of the photography mode color) ALIGNMENT switch SMALL PUPIL switch FILTER switch Photography mode indication

Menu switch

Timer indication

Angle of coverage indication

FLASH (flash level) indication

APERTURE (photography aperture) indication

Right/left detection indication

Illumination level indication

Photography mode indication ... Indicates the currently set photography mode. The modes, "COL (Color)", "GRE (Green)", "FA (FAG)", "F1, F2, AF (AUTO FLUO)" and "IA (ICG fluorescein)" ("AF, IA" in use only in Type IA) are changed by operating "Filter switching knob" on the main unit, "Ex switch" and "Ba switch". ALIGNMENT switch ..................Turns on/off the alignment bright spot. SMALL PUPIL switch ................Changes the current mode to the microcoria mode. FILTER switch ...........................Ba (barrier) filter or Ex (exciter) filter is set in the link operation with the photography switch. When the link operation is OFF, it is possible to take a picture as regarding the Ex (exciter) filter as the blue filter. Menu switch ..............................Indicates the set menu. While the TIME switch is operating, this switch disappears on the screen to prevent a wrong operation. Timer indication .........................Press the TIME (timer) switch on the base unit, and the timer starts. Press the switch again, and the timer stops. Angle of coverage indication .....Indicates the angle of coverage, which is set by the angle changing lever on the main unit. FLASH (flash level) indication ...Indicates the FLASH (flash level), which is set by the flash selector switch and the flash correction switches on the base unit. APERTURE ..............................By using the SMALL switch, it is possible to adjust the focus easily (photography aperture) (increased depth of field). By using the LARGE switch, it is possible to take a picture with low flash level. This can be used in color photography and ICG fluorescein photography (only in Type IA). Right/left detection indication ...."L" (left eye) or "R" (right eye) is indicated. Illumination level indication .......Indicates the illumination level (halogen), which is set by the illumination level knob on the base unit.

16 NOMENCLATURE

SET MENU display Carries out a variety of settings. Press the MENU button on the setting operation display, and "SET MENU" will be displayed. Refer to "SETTING ON THE SET MENU DISPLAY" on page 23.

FLASH LEVEL (Flash level standard setting) FIX COLOR (External fixation color selection) FLICK (External fixation blinking selection) FILTER IN/OUT (Filter link operation method) I/F (Interface selection)

EXIT switch

FLASH LEVEL (Flash level standard setting) .... Sets the flash intensity level standard value for each photography mode. FIX COLOR (External fixation color selection)... Selects the color of the external fixation lamp, "AUTO" (automatic), "GREEN" or "RED". FLICK (External fixation blinking selection)........ Selects the status of the external fixation lamp, "ON" (blinking) or "OFF" (lighting) FILTER IN/OUT (Filter link operation method) ... Selects the link operation method for the photography switch and Ba (barrier) filter. I/F (Interface) switch........................................... Changes the interface. EXIT switch ........................................................ Returns to the setting operation display.

17 NOMENCLATURE

NAMES IN OPTICAL FINDER

Reticles Alignment bright spot Split lines

TIMER

00.00.0 R 50

"With split" type

Reticles Alignment bright spot

"Without split" type

18 NOMENCLATURE

STANDARD ACCESSORIES Upon unpacking, make sure that all the following standard accessories are included. Numbers in ( ) are the quantities. Spare parts case (1)

Fuse (2)

Chinrest tissue paper (1)

Chinrest tissue pin (2)

External fixation target (1)

Allen wrench (2)

Large: (2.5) Small (1.5) Dust cover (1)

Screw (for main unit connecting cord) (3)

Instruction manual (1) Unpacking and assembly manual (1)

Internal fixation target mount (1) (Only in relevant products)

Phillips screwdriver (1)

Inclination brake lever (1)

19 NOMENCLATURE

SETUP CONNECTING THE POWER CORD WARNING

To avoid fire and electric shock in case of leakage, be sure to use a grounded receptacle. Do not connect to receptacles that are not grounded.

CAUTION

To avoid electric shock, do not handle the plugs with wet fingers.

Make sure that the

Connect the power cord into a grounded outlet.

20 SETUP

POWER SWITCH

on the instrument is in the "OFF" (

) position.

CONNECTING THE EXTERNAL DEVICE Consult your dealer for connection with external devices.

Use the external device complying with IEC 60950.

Connecting to IMAGEnet This instrument can be connected to IMAGEnet (optional accessory) by two methods. Connecting method 1: when using the USB terminal

1 2

Connect one end of the USB cable (optional accessory) to the USB terminal. Connect another end of the USB cable to IMAGEnet. Send the data (right/left eye detection indication, angle of coverage indication, etc.) of the instrument from the USB terminal and receive the data (timer, flash level, etc.) of IMAGEnet. Connect one end of the connecting cord (optional accessory) to the CONTROL terminal. Connect another end to IMAGEnet. Performs synchronization.

Connecting method 2: when using the DATA terminal

1 2

Connect one end of the connecting cord (optional accessory) to the DATA terminal. Connect another end of the connecting cord to IMAGEnet. Send the data (right/left eye detection indication, angle of coverage indication, etc.) of the instrument from the DATA terminal. Connect one end of the connecting cord (optional accessory) to the CONTROL terminal. Connect another end to IMAGEnet. Performs synchronization.

DATA

CONTROL

TIMER

USB terminal

DATA terminal

CONTROL terminal

TIMER terminal

In the U.S. and Canada, use PC which complies with UL60950 or IEC60950.

Connecting to the video timer

1 2 3

Connect the timer cable (optional accessory) to the TIMER terminal. Connect the timer cable (optional accessory) to the input terminal of the video timer (optional accessory). Connect the video signal cable to the input terminal of the external monitor. Consult your dealer for the details. In the U.S. and Canada, use video timer or monitor which complies with UL60950 or IEC60950.

21 SETUP

RESET FROM POWER SAVE STATE This instrument has a power saving feature to save energy. After 30 minutes of non-use, the instrument switches to power save mode. In ICG fluorescein photography (only in Type IA), after 60 minutes of non-use, the instrument switches to power save mode. In the power saving state, "SLEEP" is indicated on the control panel.

SLEEP Control panel

22 SETUP

Press the PHOTOGRAPHY SWITCH of the JOYSTICK on the base unit. After a few seconds, operation is possible.

SETTING ON THE SET MENU DISPLAY Setting for the following items can be done on the "SET MENU" display on the control panel: "FLASH LEVEL" (flash level standard setting), "FIX COLOR" (external fixation color selection), "FLICK" (external fixation blinking selection) and "FILTER IN/OUT" (filter link operation method).

Press the MENU switch

The "SET MENU" display appears.

on the setting operation display on the control panel.

FLASH LEVEL (Flash level standard setting) FIX COLOR (External fixation color selection) FLICK (External fixation blinking selection)

FILTER IN/OUT (Filter link operation method) I/F (Interface selection)

EXIT switch

Press the

EXIT

switch, and the setting operation display appears again.

23 SETUP

FLASH LEVEL (Flash level standard setting) You can set the flash level standard value for each photography mode. The following table shows the data of the factory default.

Press the FLASH LEVEL on the "SET MENU" display. The "FLASH LEVEL" setting display appears.

Touch the value indication window to be changed in each photography mode. Black numbers will appear against a white background.

Change the numeral with the

and

switches. Use the

switch to return to the initial value.

Press the MEMORIZE switch, to store the data. The "SET MENU" display will appear again. If you press the RETURN switch, the data will not be stored. The data is reset as before and the "SET MENU" display will appear again.

Type IA

Initial values

COLOR GREEN FA BLUE FREE1 FREE2

UPPER 18 25 36 18 9.0 9.0

LOWER 50 50 200 150 9.0 9.0

COLOR GREEN FA BLUE AF IA

UPPER 18 25 36 18 36 NF Type IA

24 SETUP

LOWER 50 50 200 150 200 ---

FIX COLOR (External fixation color selection) You can select "AUTO" (automatic) or "GREEN" or "RED" for the external fixation lamp. "AUTO" is the factory default.

1 2 3

Press the FIX COLOR on the "SET MENU" display. The "FIX COLOR AUTO/GREEN/RED" selection display will appear. Press and select AUTO , GREEN or RED . When you select "AUTO", color is automatically selected according to the photography mode. Press the MEMORIZE switch, to store the data. The "SET MENU" display will appear again. If you press the RETURN switch, the data will not be stored. The data is reset as before and the "SET MENU" display will appear again. Press the AUTO switch, and "GREEN" is set in ICG fluorescein photography and "RED" is set in other photography modes.

FLICK (External fixation blinking selection) You can set the external fixation lamp to "blinking" (ON) or "lighting" (OFF). "OFF" is the factory default.

1 2 3

Press the FLICK switch on the "SET MENU" display. The "FLICK ON/OFF" selection display will appear. Press and select

OFF

25 SETUP

FILTER IN/OUT Decide the Ba (barrier) filter or Ex (exciter) filter link operation method. "OUT" is the factory default.

1 2 3

Press the FILTER IN/OUT switch on the "SET MENU" display. The "FILTER IN/OUT" selection display will appear. Press and select

OUT

. (Refer to the table below.)

When you set the link operation of the Ba (barrier) filter and the PHOTOGRAPHY SWITCH , the relevant units will operate as shown in the following table because of the relation between the setting for "FILTER IN/OUT" on the "SET MENU" display and the FILTER switch on the control panel. FILTER switch

SET MENU FILTER IN/OUT

The

26 SETUP

OUT

FILTER

ON (The background of switch is black.) Press the PHOTOGRAPHY SWITCH , and the Ba (barrier) filter is inserted and it stays there. Each time you press the PHOTOGRAPHY SWITCH , the Ba (barrier) filter is inserted and removed.

OFF (The background of switch is white.) The Ba (barrier) filter is not linked with the PHOTOGRAPHY SWITCH . If you press the Ba (barrier) filter switch, photography with blue filter is possible.

switch is displayed when the filter for fluorescein photography is set.

I/F Set the interface to "USB" or "NORMAL". "NORMAL" is the factory default.

1 2 3

Press the I/F switch on the "SET MENU" display. The "USB/NORMAL" selection display will appear. Press and select "USB" or "NORMAL". Press the MEMORIZE switch, to store the data. The "SET MENU" display will appear again. If you press the RETURN switch, the data will not be stored. The data is reset as before and the "SET MENU" display will appear again. Refer to "CONNECTING THE EXTERNAL DEVICE" on page 21. Select "USB" for the connecting method 1, and "NORMAL" for the connecting method 2.

27 SETUP

BASIC OPERATIONS PREPARATION FOR PHOTOGRAPHY

1 2 3

Check the connection of the power cord. Refer to "CONNECTING THE POWER CORD" on page 20 for the connection procedure. Set each POWER SWITCH on the instrument and the external record device to the "ON" (I) position. Make sure that the instrument is positioned horizontally. If the instrument is not set horizontally, incline it up and down until the "Horizontal" index window is red. Swing the instrument right and left and stop it where the direction of the 1st arm is fit to that of the 2nd arm. Refer to "PHOTOGRAPHY BY INCLINATION AND SWINGING" on page 42.

"Horizontal" index window

Swing arm locking lever

Inclination brake knob

Fit the direction of 1st arm to that of 2nd arm.

Inclination handle

To fix the instrument, tighten the inclination brake knob and swing arm locking lever.

Adjust the dioptric power of the optical finder. How to adjust the dioptric power: Place a white paper in tight contact with the objective lens barrel. (Be careful not to touch the lens.) Turn the eyepiece lens counterclockwise to put it out fully. Then, gradually turn the eyepiece lens clockwise and, when the reticles (double cross-hairs) are seen clearly, stop turning. Dioptric power of optical finder

Out of focus

In focus

Inaccurate dioptric power adjustment results in unfocused photos.

Refer to "NAMES IN OPTICAL FINDER" on page 18.

28 BASIC OPERATIONS

How to move the instrument by the control lever. • To move the base unit slightly back and forth or right and left, tilt the control lever in the proper direction.

Operation of control lever (back and forth/right and left)

Guiding the base cover with one hand, push the control lever with the other hand in the desired direction. You will move the instrument easily. • To move the instrument body up and down, turn the control lever clockwise to move it up and counterclockwise to move it down.

Operation of control lever (up and down)

29 BASIC OPERATIONS

PREPARATION OF THE PATIENT

CAUTION

To avoid injury while moving the chinrest up and down, instruct the patient to keep hands away from moving parts.

CAUTION

Be careful not to let the patient hold the column. His/her finger may be pinched between the column and 1st/2nd arm causing injury.

NOTE

Ask the patient to remove any glasses or contact lenses.

Drop the mydriatic agent in the patient's eyes to achieve full dilation. Make sure that the patient's pupils are fully dilated before beginning photography. If dilation is inadequate: When the pupils are only dilated from 4.5mm to 5.5mm, press the SMALL PUPIL SWITCH . (If the pupils are dilated to 4.5mm or less, photography is not possible.) Also, photograph at an angle of coverage of 35° or 20°. When photographed at the 50° angle, it may not be possible to eliminate flare completely. * Do not use the inadequate.

4.5~5.5mm

2 3 4 5

SMALL PUPIL SWITCH

in other cases except when dilation of the pupil is

5.5mm or more

Lead the patient to the photography room. Pull the instrument properly to the operator side. Let the patient sit down in front of the instrument. Adjust the height of the table or the chair so that the patient can relax with his/her chin placed centrally on the chinrest. Then, let the patient rest his/her chin on the chinrest.

30 BASIC OPERATIONS

Adjust the chinrest height by turning the chinrest adjusting knob so that the outside corner of the patient's eye is level with the Canthus marker on the chinrest column. Then, let the patient rest his/her forehead on the forehead rest. Use the headband if necessary. (The headband is installed only in the relevant products.)

Canthus marker

Guide the patient's eye so that the target part of the fundus can be photographed. Guide the patient's eye appropriately by moving the external fixation target. If it is difficult to fix the patient's eye on the target due to myopia or others, turn ON the "FLICK" (External fixation blinking selection) on the "SET MENU" display to blink the external fixation target for fixing the patient's eye more easily. Refer to "FLICK (External fixation blinking selection)" on page 25.

31 BASIC OPERATIONS

COLOR PHOTOGRAPHY

1 2

CAUTION

To avoid discomfort or damage to the patient's eye, do not brighten the illumination lamp more than necessary.

CAUTION

To avoid discomfort or damage to the patient's eye, do not make a flash intensity level higher than necessary.

CAUTION

To avoid injury while moving the base, do not place your fingers into the gap between the instrument base and the power supply unit.

CAUTION

To avoid injury while inclining the instrument body, do not place your fingers into the gap between the instrument body and the 1st arm.

CAUTION

To avoid injury while moving the instrument body, do not place your fingers into the gap between the 1st/2nd arm and the chinrest column. * Please give proper instructions to the patient.

CAUTION

Pay attention to the clearance between the objective lens and the patient. When the main body is moved, the objective lens may bump against the patient's eye or nose inflicting a minor injury.

NOTE

To ensure correct imaging, adjust the height of the automatic instrument table so that the patient can relax with his/her chin placed centrally on the chinrest.

Set the

FILTER SWITCHING KNOB

to "N".

Select the camera with the UPPER/LOWER SELECTOR SWITCH of the base unit. • In the case of the 35mm camera, check the film. • In the case of the video camera, check the recording condition of the camera.

LOCK FREE

32 BASIC OPERATIONS

The flash level is automatically changed according to photography modes. Set the flash level. Set flash level with the

FLASH SELECTOR SWITCH

and the

FLASH CORRECTION SWITCH

Flash correction switch

Flash selector switch

4 5

Tell the patient to watch the external fixation target or the internal fixation target (only in Type IA). Align the illumination light with the patient's pupil. Set the illumination level with the ILLUMINATION LEVEL KNOB . You can check the set level by looking at the illumination level display on the control panel.

How to properly align the illumination light: First look at the patient's pupil from the side of the instrument. To make the illumination light coaxial to the patient's pupil, move roughly the main body to a position about 40mm in front of the patient's eye with the joystick positioned straight, and then, adjust the joystick up and down/ right and left. Then, finely adjust the joystick to image the ring slit on the cornea coaxially with the patient's pupil. • Ring slit images on cornea

• Images observed by viewfinder

• Images acquired by camera

33 BASIC OPERATIONS

6 7 8

Push the base unit toward the patient side slowly, and the retinal image is seen in the optical finder. Watching the observed image in the optical finder, adjust its brightness with the ILLUMINATION LEVEL KNOB . Finely adjust the main body forward and backward to illuminate the retina evenly. • When the alignment bright spots are used: Press the ALIGNMENT SWITCH on the control panel.

Move roughly the main body into a position about 40mm in front of the patient's eye with the joystick positioned straight. Then adjust the joystick up and down / right and left until the illumination light becomes coaxial with the patient's pupil. The alignment bright spots will appear on the right and left sides in the optical finder. Make these spots as small as possible. If the patient moves the eyes or when photographing the periphery by tilting or swinging, sometimes the alignment bright spots on the right and left disappear.

• Adjust alignment so that flares cannot be seen. • The instrument can be used as mentioned above for the front of 50°. • When the angle of coverage is changed or when photographing the periphery, it is not possible to use the alignment bright spots.

Focus the retina. • How to focus the retinal image with the split lines* (Only in "With split" type) Set the internal fixation target (only in Type IA) to the "OFF" position, and turn on the SPLIT SWITCH . Turn the focusing knob to align the right and left split lines. * The split lines cannot be used if the DIOPTER COMPENSATION LENS SELECTOR is set other than "0". SPLIT

34 BASIC OPERATIONS

TIME

If you cannot align the split lines into one line by operating the focusing knob, change the diopter compensation lens by the diopter compensation lens selector. If the split lines are not easily visible, lower the illumination level. If one of the split lines cannot be seen, check if dilation is sufficient or if the eye is obstructed by eyelashes or the eyelid, interrupting the light. When the split lines are not necessary, they can be deleted from the optical finder. Press the SPLIT SWITCH , and the split lines disappear from the optical finder. Press the SPLIT SWITCH again, and the split lines are displayed in the optical finder. • How to sharply focus the retinal image: While looking into the optical finder, turn the focusing knob so that the retinal image and the reticles are observed sharply and distinctly in the field at the same time.

How to adjust focus easily Press the SMALL switch of "APERTURE" (photography aperture). (This can be used in color photography and ICG fluorescein photography (only in Type IA).) How to photograph retinal peripheries Have the patient watch the external fixation target correctly with the eye that is not being photographed. Then, photograph the peripheries. It will be possible to photograph the peripheries of the retina, by tilting and/or swinging the main body. (Refer to P. 42.) When photographing the retinal peripheries, the split lines are deviated. Take a picture so that retina may be in focus.

Set the angle of coverage. Move the ANGLE CHANGING LEVER to set the angle of coverage to 50°, 35° or 20°. To check the angle in use, see the picture angle display on the control panel screen. Pay attention to the relationship between flare and focus due to difference in angle of coverage. If flare is eliminated at the 50° angle of coverage, no flare occurs at 35° or 20°. Furthermore, refocusing is unnecessary at 50° if the retinal image has already been properly focused at 35° or 20°.

35 BASIC OPERATIONS

Make sure that the split line is aligned with the alignment bright spot. Press the PHOTOGRAPHY SWITCH when the patient's eye is fully open. Instruct him/her not to blink. Photography switch

If the light intensity of the photography image is not correct, adjust it with the FLASH CORRECTION SWITCH and repeat the alignment and photography procedure. How to change the dioptric power compensation To adjust the dioptric power, turn the patient's eye condition.

DIOPTER COMPENSATION LENS SELECTOR

according to the

Diopter compensation lens selector

TRC-50DX

Compensation range

0: - : +: A:

-10D -23D +5D +22D

~ +6D ~ -9D ~ +23D ~ +41D

When the diopter compensation lens is set to any other values except "0", the split lines are OFF. (Only in "With split" type)

How to change the dioptric power compensation (This correction unit is installed in one type and not installed in another type.) According to the astigmatism degree of the patient's eye, pull out the astigmatism correction knob and turn the dial to adjust the astigmatism.

6 3

The astigmatism correction is classified into two steps, "3D" and "6D". Push the astigmatism correction knob to the innermost, and the instrument does not correct the astigmatism. Pull out the astigmatism correction knob and set it at "3". The instrument performs the 3D astigmatism correction. Set it at "6", and the instrument performs the 6D astigmatism correction.

36 BASIC OPERATIONS

FAG PHOTOGRAPHY WARNING

To avoid fire and electric shock, do not put cups or other containers with liquids near the instrument.

NOTE

To ensure correct imaging, adjust the height of the automatic instrument table so that the patient can relax with his/her chin placed centrally on the chinrest.

The basic operation is the same as "COLOR PHOTOGRAPHY". The only difference is the insertion of the fluorescein filters and intravenous injection of fluorescein to the patient. Preparation

Set the

FILTER SWITCHING KNOB

to "N".

Select the camera with the UPPER/LOWER SELECTOR SWITCH of the base unit. • In the case of the 35mm camera, check the film. • In the case of the digital camera, check the recording condition of the camera. OCK E

Press the

Ex SWITCH

. SPLIT

TIME

When the barrier filter should be operated in the link condition with the PHOTOGRAPHY SWITCH , press the FILTER SWITCH on the control panel. The barrier filter will be inserted in a link operation with the PHOTOGRAPHY SWITCH . The link operation is classified into two types. You can select one type on the "SET MENU" display on the control panel. (1) is the factory default. Refer to "FILTER IN/OUT" on page 26 for the details of the setting change method. (1) Press the FILTER SWITCH while "IN" is selected for "FILTER IN/OUT" on the "SET MENU" display. The barrier filter is inserted when pressing the shutter first and it stays. (2) Press the FILTER SWITCH while "OUT" is selected for "FILTER IN/OUT" on the "SET MENU" display. The barrier filter is inserted and removed each time you press the shutter.

37 BASIC OPERATIONS

4 5

Make the same adjustments, as 3~10 for "COLOR PHOTOGRAPHY", and focus the retinal image properly. Prepare for the intravenous injection of fluorescein. How to take distinct fluorescein photographs: If too much time is taken in giving the intravenous injection, the fluorescein will be diffused in the blood vessels and diagnostic quality photographs will not be possible.

Press the TIME SWITCH at the same time as an intravenous injection of fluorescein is given to the patient. • When the timer starts, it will beep every second up to 20 seconds. • Also, the TIME SWITCH will blink simultaneously every second until the timer goes OFF. Press the

Ba (BARRIER) SWITCH

SPLIT

TIME

SPLIT

TIME

When the FILTER SWITCH is ON (white letters on black background), the barrier filter is inserted into the photography unit in a link operation with the PHOTOGRAPHY SWITCH .

Press the

PHOTOGRAPHY SWITCH

. Photography switch

When you keep pressing the ture per second.

PHOTOGRAPHY SWITCH

When you have finished photographing, press the

38 BASIC OPERATIONS

, it is possible to take one (1) pic-

TIME SWITCH

to stop the timer.

ICG FLUORESCEIN PHOTOGRAPHY (ONLY IN TYPE IA) WARNING

To avoid fire and electric shock, do not put cups or other containers with liquids near the instrument.

NOTE

To ensure correct imaging, adjust the height of the automatic instrument table so that the patient can relax with his/her chin placed centrally on the chinrest.

The basic operation is the same as "FAG PHOTOGRAPHY". The difference is that observation of the retina is done with the monitor.

Set the

to "IA".

FILTER SWITCHING KNOB

The ICG observation infrared camera is automatically selected.

Make the same adjustments, as 3~10 for "COLOR PHOTOGRAPHY", and focus the retinal image properly. Select "AUTO" or "GREEN" with the FIX COLOR (External fixation color selection) on the "SET MENU" display of the control panel to set the external fixation target color to "green". Near infrared light is used as the illumination light source. So, it is easy to fix the eye on the target by selecting a green fixation target. The split lines and alignment bright spot are turned off.

3 4

Prepare for the intravenous injection of ICG fluorescein. Press the TIME SWITCH at the same time as an intravenous injection of fluorescein is given to the patient. • The timer starts.

Press the

Ba (BARRIER) SWITCH

SPLIT

TIME

SPLIT

TIME

When the fluorescein retinal image is fully bright: • Press the SMALL switch of "APERTURE" (photography aperture), and you can adjust focus easily.

6 7

Press the

PHOTOGRAPHY SWITCH

When you have finished photographing, press the

TIME SWITCH

to stop the timer.

39 BASIC OPERATIONS

RED FREE PHOTOGRAPHY WITH GREEN FILTER (ONLY IN RELEVANT PRODUCTS)

1 2

WARNING

To avoid fire and electric shock, do not put cups or other containers with liquids near the instrument.

NOTE

To ensure correct imaging, adjust the height of the automatic instrument table so that the patient can relax with his/her chin placed centrally on the chinrest.

Set the

to "G".

FILTER SWITCHING KNOB

Take a picture according to the same procedure as "COLOR PHOTOGRAPHY".

AUTO FLUO (AUTO FLUORESCENCE) PHOTOGRAPHY (ONLY IN RELEVANT PRODUCTS) WARNING

To avoid fire and electric shock, do not put cups or other containers with liquids near the instrument.

NOTE

To ensure correct imaging, adjust the height of the automatic instrument table so that the patient can relax with his/her chin placed centrally on the chinrest.

In the type without the AUTO FLUO filter, this filter can be installed as an optional accessory. The intravenous injection of fluorescein is not done.

1 2 3

Set the

to "AF".

FILTER SWITCHING KNOB

Take a picture according to the same procedure as RAPHY". Press the

Ba (BARRIER) SWITCH

2~9 for "FLUORESCEIN PHOTOG-

When the FILTER SWITCH is "ON" (white letters on black background), the barrier filter is inserted into the photography unit by a link operation with the PHOTOGRAPHY SWITCH .

40 BASIC OPERATIONS

Press the

PHOTOGRAPHY SWITCH

. Photography switch

When you keep pressing the ture per second.

PHOTOGRAPHY SWITCH

, it is possible to take one (1) pic-

41 BASIC OPERATIONS

OBJECTIVE OPERATIONS PHOTOGRAPHY BY INCLINATION AND SWINGING To prevent the instrument from malfunctioning, do not perform inclination and base swinging (right and left) while holding the camera connected to UPPER or LOWER mount.

NOTE

1 2

When performing inclination, loosen the move the INCLINATION HANDLE .

INCLINATION BRAKE KNOB

gradually until you can

Change the inclined angle of the instrument with the INCLINATION HANDLE . The allowable inclined angle is up to 15° in the upper direction and up to 10° in the lower direction.

Inclination brake knob

Inclination handle

3 4

When performing swinging, loosen the

SWING ARM LOCKING LEVER

on the

2ND ARM

Push the side of the instrument lightly or pull the focusing knob to change the swing angle of the instrument. The allowable swing angle is up to 30° in the right and left direction.

Swing arm locking lever

5 6

Perform inclination and swinging until you get a desired position and then take a picture. Perform alignment and photography for the eye according to the same procedure as "COLOR PHOTOGRAPHY". When performing inclination and swinging, the split lines and alignment bright spot should be regarded as standard.

42 OBJECTIVE OPERATIONS

BLUE FILTER PHOTOGRAPHY NOTE

To ensure correct imaging, adjust the height of the automatic instrument table so that the patient can relax with his/her chin placed centrally on the chinrest.

The basic operation is the same as "COLOR PHOTOGRAPHY". It is possible to photograph with the EXCITER filer as the blue filter by setting the FILTER SWITCH to "OFF".

1 2

Set the

FILTER SWITCHING KNOB

Press the FILTER SWITCH white background.)

to "N".

to "OFF" on the control panel. (Black letters will appear on

The barrier filter is not linked with the shutter.

3 4

Press the

EXCITER SWITCH

Perform alignment and photography for the eye according to the same procedure as "COLOR PHOTOGRAPHY". Press the Ba (BARRIER) SWITCH , and the barrier filter is inserted. Press it again, and the barrier filter retreats.

PHOTOGRAPHY WITH ALTERNATIVE FILTER (EXCLUDING TYPE IA) The filter frames F1/F2, which can be installed/removed, are available. Set an alternative filter and take a picture. The basic operation is the same as "RED FREE PHOTOGRAPHY WITH GREEN FILTER" on page 40. Use a filter which cuts off the ultraviolet rays and infrared rays.

Refer to "How to install the AUTO FLUO Ex filter" on page 63 for changing the filter.

43 OBJECTIVE OPERATIONS

STEREO PHOTOGRAPHY Allow the illumination light to come into the patient's pupil so that uniform brightness can be kept on the eye. Then, take a picture using the STEREO LEVER . The basic operation is the same as "COLOR PHOTOGRAPHY".

Align the patient's pupil and the instrument in proper positions. Unless the instrument's optical axis aligns with the pupil's optical axis in the up-and-down and right-and-left directions, flares will occur on one side. Be careful. Refer to "How to properly align the illumination light" on page 31. As flares easily appear at an angle of coverage of 50°, it is suggested that stereo photography is taken at an angle of coverage of 35° or 20°. Affix the

STEREO LEVER

. STEREO FREE

Move the instrument gently until it stops in the right and left direction and press the PHOTOGRAPHY SWITCH (SHUTTER) in each position. Unless you move the instrument until it stops, the effect of the stereo separation will be reduced.

44 OBJECTIVE OPERATIONS

INTERNAL FIXATION TARGET MOUNT (ONLY IN TYPE IA) Internal fixation target mount (in "With split" type of Type IA)

1 2

3 4

Look into the optical finder and focus the retinal image. Turn off the SPLIT SWITCH . * If the SPLIT SWITCH is turned on, the knob will be locked.

SPLIT

TIME

Move the knob to guide the patient's eye. The knob can be pushed and pulled and moved back and forth. The fixation point will move left/right and back/forth by operating the knob. Focusing is not necessary. Move it slowly to guide the patient's eye. Perform alignment and photography for the eye according to the same procedure as "COLOR PHOTOGRAPHY". * The fixation point will also be photographed with the retinal image. * When using the SPLIT lines, bring the knob to the "OFF" position and then turn on the SPLIT SWITCH . If the SPLIT SWITCH is ON without setting the knob to "OFF", photographs cannot be taken. Be sure to set the knob to the "OFF" position.

Knob

Push and pull.

Fixation point

Move back and forth.

Internal fixation target mount (in "Without split" type of Type IA) • Operating procedures (1) Move the knob and guide the patient's eye with the fixation point, while checking movement through the finder. The knob moves in every direction. Up-and-down movement is used for obtaining proper focus, while right-andleft and back-and-forth movements are used to move the fixation point in the finder. Movement should be done slowly, in order not to confuse the patient when guiding the patient's eye. • Along with the retinal image, the fixation point is also recorded. (Present in the photograph)

45 OBJECTIVE OPERATIONS

BEFORE REQUESTING SERVICE TROUBLESHOOTING WARNING

To avoid electric shock, do not attempt disassembling, rebuilding and/ or repairs on your own. Ask your dealer for repairs.

WARNING

Do not remove the external covers from the main unit, chinrest unit or power supply unit except for the lamp house cover. You may receive an electric shock.

When an error is found, review the Check List below. If, after following the instructions below, you still have problems or if the problem does not fall into any of the categories below, contact your dealer or TOPCON (see the back cover). Check List Problem

Condition

Check

Periphery of photographed • Operation distance (alignment) is incor- Adjust operation distance (alignment). image is dark. rect.

• Focusing is incorrect.

Adjust focus.

• Patient's pupil is not large enough.

Darken room and thoroughly dilate patient's pupil.

Photographed image is • Operation distance (alignment) is incor- Adjust operation distance (alignment). flared all over. (The whole rect. image is covered by light.) • Focusing is incorrect. Adjust focus. • Opacity in patient's eye Photographed image is whitened.

Page

Flare caused by opacity cannot be removed.

• Patient blinked the moment the photo- Take another picture. graph was taken.

29 35 -----

Photographed image has • Objective lens is stained. a dim white spot. • Eyelashes were in patient's eye the moment the photograph was taken. (Dim light was seen at screen bottom the moment the alignment was done.)

Clean lens.

Let patient open eye wider and take the picture again. If not wide enough, open the eyelid (i.e., Take picture holding eyelid open).

Photographic image is dark all over.

• Flash level is insufficient.

Adjust the flash level with the flash correction switch or flash selector switch.

• Xenon lamp set screw is loose.

Fix xenon lamp securely.

• Xenon lamp has served its life.

Change xenon lamp.

Illumination lamp does not • Power save function is on. Press photography switch and cancel turn on. ("SLEEP" is indicated on the control power save function. panel.)

• Lamp terminal is loose.

Refasten lamp terminal.

• Fuse is burnt.

Change fuse.

• Lamp is burnt.

Change lamp.

• Lamp house cover is not set.

Set Lamp house cover properly.

Change fuse.

The external fixation tar- • Fuse is burnt. get does not light/blink.

46 BEFORE REQUESTING SERVICE

Problem

Condition

Split lines cannot be seen. • SPLIT switch is set to OFF.

Check Turn SPLIT line ON with Split switch.

Page 15

• Diopter compensation lens selector is Return Diopter compensation lens selecnot set to "0". tor to "0".

• Patient's pupil is not large enough.

Darken room and thoroughly dilate patient's pupil.

• The internal fixation target is not set to Set the internal fixation target to "OFF". "OFF". Xenon lamp does not turn • Power save function is on. Press photography switch and cancel on. ("SLEEP" is indicated on the control power save function. panel.)

45 22

• Xenon lamp has served its life.

Change xenon lamp.

• Fuse is burnt.

Change fuse.

• Xenon lamp set screw is loose.

Refasten lamp terminal.

• The NF switch on the base unit is Press Flash selector switch to set the pressed. flash level.

Cannot get patient's pupil • Patient's face position is incorrect. (The Have patient keep his/her position corat center. chin and forehead are not correctly on rectly. the rests, or the patient faces sideways.)

• Patient's face height is incorrect. Nothing is recorded in • Anomaly in external recording device. external recording device. • Cable connections are incorrect.

Adjust face height with Chinrest adjusting knob.

Check power supply, settings, etc.

---

Check and correct cable connections.

The 35mm UPPER cam- • Power save function is on ("SLEEP" is Press the photography switch to cancel era does not work. indicated on the control panel.) power save function.

• The battery for camera is dead.

Replace the battery.

---

• Fuse is burnt.

Change fuse.

• UPPER/LOWER selector switch on the Press UPPER/LOWER selector switch to base unit is not set to "UPPER". set it to "UPPER".

• The 1× relay lens is not attached firmly. Attach the 1× relay lens firmly.

• The camera is not fixed properly to the Fix the camera on the 1× relay lens prop1× relay lens. erly.

Black dots are seen in the • The shading compensation cover is Perform cleaning with a blower, etc. photographed image. stained.

---

Flare cannot be eliminated • Angle changing lever is not set at the Turn Angle changing lever to the "click" at angle of coverage 50°. "click" position. position.

• The microcoria mode is set because Press SMALL PUPIL switch to cancel SMALL PUPIL switch is pressed. the microcoria mode.

• The patient's eye and instrument are Set the patient's eye and instrument cornot positioned correctly. rectly.

• The patient's eye is not fully dilated.

Dilate the patient's eye fully.

Correct focus is not possi- • The optical finder dioptric power is not Adjust the optical finder dioptric power. ble. adjusted.

30 28

• Diopter compensation lens selector is Adjust Diopter compensation lens selecnot adjusted properly for the dioptric tor to the dioptric power of the patient's power of the patient's eye. eye properly.

• The patient's eye is clouded due to cataract.

---

• The patient's eye is filled with tears.

---

• The patient's eye and instrument are Set the patient's eye and instrument cornot positioned correctly. rectly.

47 BEFORE REQUESTING SERVICE

Problem

Condition

Operator cannot see the • Illumination light is not ON. patient's eye. • The objective lens cap is set.

Check Adjust the illumination level. Remove the objective lens cap.

Page 33 ---

• BARRIER filter and EXCITER filter are Set BARRIER filter and EXCITER filter to set to "IN". "OFF".

• Angle changing lever stops in the mid- Turn Angle changing lever to the "click" dle of the "click" process. position.

• Diopter compensation lens selector Turn Diopter compensation lens selector stops in the middle of the "click" pro- to the "click" position. cess.

Internal fixation target • SPLIT switch is not set to "OFF". mount does not work.

Set SPLIT switch to "OFF".

Photograph of the retinal • The distance between the patient's eye Set the patient's eye closer to the instruperipheries is dark. and the instrument is longer than the ment and then take a picture. proper working distance.

Photograph of retinal cen- • The pupil of the patient's eye is not fully Dilate the patient's eye fully. ter is dark. dilated.

Photograph is influenced • The distance between the patient's eye Set the patient's eye far away from the by overall flare. and instrument is shorter than the instrument and then take a picture. proper working distance.

• SMALL PUPIL switch is pressed in Press SMALL PUPIL switch to cancel angle of coverage 50°. the microcoria mode.

• Flash level is higher than necessary.

Set the flash level to a low value.

Vague white dots are seen • Tears or others adhere to the objective Clean the objective lens. through the finder and lens. also appear on the photograph.

48 BEFORE REQUESTING SERVICE

ERROR CODE LIST When "Err "( means an error number) is displayed in the blinking status on the control panel screen with a beep sound due to an operation error or a malfunction of the instrument, correct the error according to the table below. Display Err0 Err1 Err2 Err3 Err4 Err5 Err6 Err7 Err8 Err9 Err10 Err11

Cause The lamp house cover is opened. Overcharge or undercharge of charge voltage. USB cable is not connected properly.

How to correct Close the lamp house cover firmly. Consult your dealer.

Check the connection of the USB connector. FAG exciter filter does not work properly. Consult your dealer. Nothing (Not used) Nothing (NA) Photography aperture original point sensor Consult your dealer. does not work properly. Barrier filter motor sensor does not work Consult your dealer. properly. Angle sensor does not work properly. Operate the angle changing lever again. The mirror and filter of the TV relay lens do Consult your dealer. not work properly. Desired filter does not work properly. Operate the desired filter again. Illumination aperture does not work properly. Consult your dealer. Internal fixation target does not work Move the internal fixation target to the properly. "OFF" side.

When any other error except "Err0", "Err2", "Err7", "Err9" and "Err11" is displayed, consult your dealer.

49 BEFORE REQUESTING SERVICE

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TOPCON

Retinal Cameras

TRC-50DX Instruction Manual ver July 2006