Applications Of The Microprocessor In Automated Ophthalmic Instruments
| Autor: | Charles R. Munnerlyn, Lawrence R. Jobs |
|---|---|
| Rok vydání: | 1980 |
| Předmět: |
Engineering
Engineering drawing business.product_category business.industry Optical engineering Eyeglass prescription ComputerApplications_COMPUTERSINOTHERSYSTEMS Field of view law.invention Consistency (database systems) Microprocessor Upload law Sensitivity (control systems) business Projection (set theory) Computer hardware |
| Zdroj: | Minicomputers and Microprocessors in Optical Systems. |
| ISSN: | 0277-786X |
| DOI: | 10.1117/12.958819 |
| Popis: | 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.© (1980) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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