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Proceedings Paper

Measurement of retinal visual acuity in human eyes
Author(s): Elena Yu. Radchenko; Garif G. Akchurin; Valery V. Bakutkin; Valery V. Tuchin; Alexander G. Akchurin
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Paper Abstract

Measurement of retinal visual acuity (RVA) in 170 patient with different types of cataract (senile, complicated, posterior capsular ) before and after cataract extraction and also in vitro measurement of RVA with extracted cataractal lenses has shown that laser retinometer can be used for evaluating visual acuity within 0.3 - 1, practically for all types of cataract. Experimental in vitro studies of speckle-modulated laser field arising after transmission through different type of human cataractous lenses are presented. Computer analysis of digital imaging has allowed us to determine the degree of destruction of spatial coherence of scattered laser beam and the angle of resolution of retina using Retinal Analyzer of Vision (AROLI) in diagnosis of cataract. Approbation of topographic digital videosystem used for determing the extent of opacities in cataractous lenses in vivo and its use in measuring diapasons RVA for different type of cataracts is presented. The system consists of the modified slit lamp, CCD camera ( ELECTRIM) and PC PENTIUM with corresponding software.

Paper Details

Date Published: 6 April 2000
PDF: 10 pages
Proc. SPIE 4001, Saratov Fall Meeting '99: Optical Technologies in Biophysics and Medicine, (6 April 2000); doi: 10.1117/12.381495
Show Author Affiliations
Elena Yu. Radchenko, Saratov State Medical Univ. (Russia)
Garif G. Akchurin, Saratov State Univ. (Russia)
Valery V. Bakutkin, Saratov State Medical Univ. (Russia)
Valery V. Tuchin, Saratov State Univ. (Russia)
Alexander G. Akchurin, Saratov State Univ. (Russia)

Published in SPIE Proceedings Vol. 4001:
Saratov Fall Meeting '99: Optical Technologies in Biophysics and Medicine
Valery V. Tuchin; Dmitry A. Zimnyakov; Alexander B. Pravdin, Editor(s)

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