Applications Of The Microprocessor In Automated Ophthalmic Instruments

Charles R. Munnerlyn; Lawrence R. Jobs

doi:10.1117/12.958819

8 August 1980 Applications Of The Microprocessor In Automated Ophthalmic Instruments

Charles R. Munnerlyn, Lawrence R. Jobs

Proceedings Volume 0230, Minicomputers and Microprocessors in Optical Systems; (1980) https://doi.org/10.1117/12.958819
Event: 1980 Technical Symposium East, 1980, Washington, D.C., United States

Abstract

Since the development of the microprocessor, instrument designers can take a fresh look at the performance require ments of their system designs. The microprocessor allows the instrument to perform tasks which previously required subjective judgement of a skilled technician. The instrument can adjust its mode of operation dependent upon the nature of the data collected. It can also employ internal calibration techniques and statistical analysis of data to improve its consistency. Data can be stored and processed before being displayed, or a decision can be made to take additional data to improve the accuracy. The output format can be tailored to customary formats which can be easily modified on demand. This paper describes how these approaches have been employed in cwo ophthalmic instruments. The first is the Dioptron8automatic refractor which is used to objectively obtain a preliminary eyeglass prescription. The second is the Perimetron automatic projection perimeter which measures the contrast sensitivity of the retina over the entire field of vision. This instrument. is capable of performing many tasks normally requiring a highly skilled technician.

Citation Download Citation

Charles R. Munnerlyn and Lawrence R. Jobs "Applications Of The Microprocessor In Automated Ophthalmic Instruments", Proc. SPIE 0230, Minicomputers and Microprocessors in Optical Systems, (8 August 1980); https://doi.org/10.1117/12.958819

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KEYWORDS

Eye

Calibration

Retina

Optical spheres

Infrared radiation

Servomechanisms

Statistical analysis

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