Fundus topology visualization and registration with high resolution in a wide range of angles

Mariya I. Tyurina; Irina V. Vorob'eva; Viktor K. Salakhutdinov; Djaser Doroshenko

doi:10.1117/12.697359

24 July 2006 Fundus topology visualization and registration with high resolution and in a wide range of angles

Mariya I. Tyurina, Irina V. Vorob'eva, Viktor K. Salakhutdinov, Djaser Doroshenko

Proceedings Volume 6163, Saratov Fall Meeting 2005: Optical Technologies in Biophysics and Medicine VII; 61631M (2006) https://doi.org/10.1117/12.697359
Event: Saratov Fall Meeting 2005, 2005, Saratov, Russian Federation

Abstract

The problem of software and hardware implementation of methods for the visualization of fundus is considered. The parameters of the visualization must meet the medical requirements for the devices of early diagnostics of various diseases including insular diabetes, abnormalities in the permeability of the carotid artery, AIDS, etc. The requirements to the resolution and the field of registration are analyzed. It is demonstrated that the size of the registered image must be at least 2 times 10³ x 2 times 10³ TV lines (4 times 10³ x 4 times 10³ pixels). A device for measuring out-of-the-axis aberrations of the optical system of the eye (OEA) is described, which is based on the Hartmann-Shack sensor (HSS). The results of the investigation of OEA under various oblique angles and sizes of the patient's pupil are presented. It is shown that the visualization with acceptable quality within the field of the order requires 90° the size of the pupil at most 3 mm and the angular size of the registered fragment ofthe image at most 15° near the optical axis of the eye and 8° in the peripheral areas.

Citation Download Citation

Mariya I. Tyurina, Irina V. Vorob'eva, Viktor K. Salakhutdinov, and Djaser Doroshenko "Fundus topology visualization and registration with high resolution and in a wide range of angles", Proc. SPIE 6163, Saratov Fall Meeting 2005: Optical Technologies in Biophysics and Medicine VII, 61631M (24 July 2006); https://doi.org/10.1117/12.697359

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KEYWORDS

Eye

Visualization

Image processing

Image registration

CCD cameras

Cameras

Diodes

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