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Proceedings Paper

Applications Of The Microprocessor In Automated Ophthalmic Instruments
Author(s): Charles R. Munnerlyn; Lawrence R. Jobs
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Paper 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.

Paper Details

Date Published: 8 August 1980
PDF: 5 pages
Proc. SPIE 0230, Minicomputers and Microprocessors in Optical Systems, (8 August 1980); doi: 10.1117/12.958819
Show Author Affiliations
Charles R. Munnerlyn, Coherent,Inc. (United States)
Lawrence R. Jobs, Coherent,Inc. (United States)


Published in SPIE Proceedings Vol. 0230:
Minicomputers and Microprocessors in Optical Systems
Chris L. Koliopoulos; Frederic M. Zweibaum, Editor(s)

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