Model RT-2100 - Crystal PM

1 NIDEKREFRACTORM odel RT-2100 OPERATOR S MANUAL* Specifications are subject to change without notice for CO., LTD.: 34-14, Maehama, Hiroishi-cho, Gamagori, Aichi 443-0038, Japan(Manufacturer)Telephone: (0533) 67-6611 Facsimile: (0533) 67-6610 NIDEK CO., LTD: 6th Floor, Takahashi Bldg., , 3-chome, Kanda-jinboucho(Tokyo Office)Chiyoda-ku, Tokyo 101-0051, JapanTelephone: (03) 3288-0571 Facsimile: (03) 3288-0570 Telex: 2226647 NIDEK JNIDEK INCORPORATED: 47651 Westinghouse Drive Fremont, California 94539, U.

2 S. A.(United States Agent)Telephone: (510) 226-5700 Facsimile: (510) 226-5750 NIDEK SOCIETE ANONYME: Europarc 13, rue Auguste Perret, 94042 CRETEIL, France(Authorized Representative)Telephone: (01) 49 80 97 97 Facsimile: (01) 49 80 32 in JAPANBEFORE USE, READ THIS Operator s Manual contains the operating procedures, safety precautions andspecifications for the RT-2100 when it is used in combination with the following chartpresenting this manual, JIS, IEC 60601 and UL standards are refractor head complies with ISO 10341 (Ophthalmic instruments - Refractor heads).

3 The dioptric powers are indicated with a reference wavelength of correct use, it is necessary that the contents of this manual, in particular the safetyprecautions and operating procedures, are thoroughly understood before using the manual handy for are no user-serviceable parts inside the instrument except printer paper and , if you encounter any problems or have questions about the instrument duringuse, contact your authorized distributor.*1 Chart presenting devices used in combination with the RT-2100 NIDEK SPACE SAVING CHART SSC-300/SSC-330/SSC-350 NIDEK CHART PROJECTOR CP-670/CP-690*2 Figures of the control box and charts for CP-690 Type U are used in this manual.

4 *3 In this manual, visual acuity is represented by fractions (feet). For VA valuesrepresented by decimals or fractions (meters), see Appendix. C Conversion tablefor VA values at the back of this manual.(This applies only to equipment whose power source is 100/120 Vac.)Table of Contents 1 INTRODUCTION .. Outline of the Instrument .. Classifications .. Symbol Information .. 1-2 2 SAFETY .. Operation .. Storage .. Installation .. Wiring .. After Use .. Maintenance .. Disposal.

5 Labels .. 2-6 3 CONFIGURATIONS .. Refractor Head .. Control Box .. Relay Box .. 3-13 4 OPERATING PROCEDURE .. Operation Flow .. Power-ON .. Entering Data .. Receiving data from the auto refractometers .. Receiving data from the lensmeter .. Manual entry with the dial .. Entering data via an IC card(available only if the RT is equipped with the IC card system) .. Setting prism lenses .. Switching coordinates between rectangular and polar .. Setting rectangular coordinates (XY).

6 Setting polar coordinates (r ) .. Recording Blur , Break and Recovery .. Removing and replacing prism lenses .. Clearing prism data .. Initial Setups .. Refraction with the Standard Program .. Program A .. Chart Presentation .. Chart selection .. VA chart masking .. Adjustment of Powers (Final Fit) .. Auto adjustment of Far Powers .. Fine adjustment after auto adjustment (Semi-auto adjustment) .. Manual adjustment of powers .. After Use Care .. 4-27 5 OTHER FUNCTIONS.

7 Programming .. Deleting programs .. Programming .. Starting a programmed refraction .. Printout .. Changing an ID No.. Outputting all the data displayed on the screen .. Entering comments for printout .. Entering date and time .. Displaying a Data List .. Setting Auxiliary Lenses .. Parameter Settings .. Recalling Data .. Calling up final data .. Calling up the most recent data .. Fogging Function with Both Eyes Open .. Linkage OFF Function .. Clearing the Saved Data in Memory.

8 5-20 6 METHOD OF SINGLE TESTS .. Unaided Visual Acuity Test .. Aided Visual Acuity Test .. Visual Acuity Test Aided with Addition Power .. Cylinder Tests .. Cylinder test with astigmatism clock dial .. Cylinder test with XC lens .. Spherical Refinements .. Red/Green test .. Cross Grid test for far vision .. Binocular Vision Function Test .. Binocular balance test .. Polarized Red/Green test .. Phoria test .. For CP-690(670) TYPE U / SSC-330(300) TYPE U .. For CP-690(670) TYPE T and F / SSC-330(300) TYPE T.

9 Phoria with fixation test .. Von Graefe test (for horizontal phoria) .. Von Graefe test (for vertical phoria) .. Vertical coincidence test .. Horizontal coincidence test .. Schober test .. Stereo test .. For SSC-350 TYPE T/TCG .. For the others .. Worth test .. Maddox test (for horizontal phoria) .. Maddox test (for vertical phoria) .. Negative relative convergence test .. Positive relative convergence test .. Near point of convergence test .. Near point of accommodation test.

10 Negative relative accommodation test .. Positive relative accommodation test .. 6-34 7 COMMON PROBLEMS AND SOLUTIONS .. 7-1 8 MAINTENANCE .. Cleaning the Forehead Rest .. Cleaning the Face Shields .. Replacing the Printer Paper .. Cleaning the Measuring Windows .. Cleaning the Exterior .. Replacement Part No. for Printer Paper .. 8-4 9 SPECIFICATIONS .. 9-1 10 ACCESSORIES .. Standard Accessories .. 10-1 APPENDIX. A Descriptions of power adjustment .. A-1 APPENDIX. B Linkage between charts and auxiliary lenses.