NIDEK

Refractometers and Keratometers

TONOREF II Operators Manual Nov 2010

Operators Manual

164 Pages

Table of Contents 1. BEFORE USE... 1 1.1 Outline of the Device...1 1.2 Intended Use...2 1.3 Principles...3 1.4 Device Description...4 1.5 Measurement Screen Description...9 1.5.1 1.5.2  R/K measurement screen...9 NT measurement screen...14  1.6 Labels and Indications on the Device...16 1.7 Checking Contents...17 1.8 Before First Use...18  2. OPERATING PROCEDURE... 23 2.1 Operation Flow...23 2.2 Preparation for Measurement...24 2.2.1 2.2.2  Measuring window check for soiling and puffed air pressure check during startup 29 Switching between R/K measurement and NT measurement...31  2.3 Finishing the Measurements...33 2.3.1 2.3.2  Normal shutoff...33 Shutoff before transporting the device...34  2.4 Selecting the Mode...35 2.4.1 2.4.2  Switching to manual mode...37 Sleep mode...38  2.5 AR (refractive error) and KM (corneal curvature radius) Measurements . . .39 2.5.1 2.5.2 2.5.3 2.5.4 2.5.5 2.5.6 2.5.7  AR (refractive error) and KM (corneal curvature radius) measurements: AR/KM measurement mode...40 AR (refractive error) Measurement: AR Measurement Mode...50 KM (corneal curvature radius) Measurement: KM Measurement Mode...52 CS (Corneal Size) Measurement...54 PS (Pupil Size) Measurement...57 PD (Pupillary Distance) Measurement...60 Measuring Hard Contact Lenses...62  2.6 NT (Tonometry) Measurement: NT Mode...64 2.6.1  Eyelid detection mode...74  2.7 Printing...75 2.7.1 2.7.2 2.7.3  Printing measured data...75 Eyeprint...78 Printing parameter settings...79  XI
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