ПРИСТРІЙ ДЛЯ РЕЙТРЕЙСИНГОВОЇ АБЕРОМЕТРІЇ ОКА

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ПРИСТРІЙ ДЛЯ РЕЙТРЕЙСИНГОВОЇ АБЕРОМЕТРІЇ ОКА

Journal Title: BULLETIN of Kyiv Polytechnic Institute. Series INSTRUMENT MAKING - Year 2018, Vol 56, Issue 56

Abstract

In ophthalmology for the diagnosis with the purpose of further treatment of eye diseases worthwhile aberrometers are used. For objective research of the optical system of the eye, methods of simultaneous projection of the regular structure of light on the retina are used. But in the case of significant aberrations it is difficult to identify the affinity of light spots to the corresponding coordinates at the entrance to the pupil with these methods. This drawback is absent in the ray tracing method, since the essence of the method is the successive time-sensing of the eye with a thin laser beam. However, devices created on the basis of this method require a complex optical system of high-speed scanning of the beam along the eye's pupil, and the photoreceptive part of theaberrometers has additional optical losses due to the use of beam splitters. Therefore, the problems are of relevance, the solution of which will ensure the simplification of ray-tracing scanning systems and, as a consequence, cheaper aberrometric systems. The article proposes the device, where a complicated scanning system is replaced by a multichannel laser emitter, at the outputs of which are installed elements of the optics that are optically connected to the multichannel optic-fiber line. The photodetectorr is located in a multichannel fiber optic line, which allows to refuse the use of beam splitters. The data obtained from the measurement using the device is processed and visualized with the developed program in the LabVIEW graphical programming environment. Implementation of this device for the ray-tracing of the eye aberrometry will reduce the total cost of the hardware and software complex several times in comparison with the foreign analogues. In addition, the absence of beam splitters in the proposed solution allows simultaneous simplification of the design of the aberrometric complex and to improve the accuracy of measurement and the information capacity of the ray reflected from the retina. Further research is aimed to develop model apprehension about methods and means of constructing an aberration map of the pupil of the eye, taking into account instrumental errors, increasing the accuracy and resolution of the method of ray-tracing aberrometry

Authors and Affiliations

Vitaliy Kovalskyi, Petro Yaganov

Keywords

aberrometry. ray-tracing method. wavefront function. LabVIEW

EP ID EP568465
DOI 10.20535/1970.56(2).2018.152462
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