Modified crossed-cylinder aberroscope

Maris Ozolinsh; Diana Racene; Peteris Cikmacs

doi:10.1117/12.446682

24 October 2001 Modified crossed-cylinder aberroscope

Maris Ozolinsh, Diana Racene, Peteris Cikmacs

Proceedings Volume 4434, Hybrid and Novel Imaging and New Optical Instrumentation for Biomedical Applications; (2001) https://doi.org/10.1117/12.446682
Event: European Conferences on Biomedical Optics, 2001, Munich, Germany

Abstract

We report a technique to estimate eye aberrations, based mainly on the subjective crossed-cylinder method. In order to obtain accurate coordinates of cross sections of the aberration distorted grid image on the retinal plane, needed in subjective methods, fusion of two images is used. The image seen by the eye under investigation is fused by the patient with a similar grid generated and reshaped in the appropriate way on the computer screen. The computer simulated image is viewed either by the second eye (in order to avoid eye rivalry and suppression processes, that are typical for such conditions, stimuli for both eyes are discontinuous and are displayed sequentially with a frequency of 50 Hz) or by the eye under investigation using an optical prism bypass.

Citation Download Citation

Maris Ozolinsh, Diana Racene, and Peteris Cikmacs "Modified crossed-cylinder aberroscope", Proc. SPIE 4434, Hybrid and Novel Imaging and New Optical Instrumentation for Biomedical Applications, (24 October 2001); https://doi.org/10.1117/12.446682

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KEYWORDS

Eye

Image fusion

Computer simulations

Image processing

Biomedical optics

Lithium

Optical imaging

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