Retinal oximetry with a multiaperture camera

Paul Lemaillet; Art Lompado; Mohamed Ibrahim; Quan Dong Nguyen; Jessica C. Ramella-Roman

doi:10.1117/12.841980

2 March 2010 Retinal oximetry with a multiaperture camera

Paul Lemaillet, Art Lompado, Mohamed Ibrahim, Quan Dong Nguyen, Jessica C. Ramella-Roman

Author Affiliations +

Proceedings Volume 7550, Ophthalmic Technologies XX; 755021 (2010) https://doi.org/10.1117/12.841980
Event: SPIE BiOS, 2010, San Francisco, California, United States

Abstract

Oxygen saturation measurements in the retina is an essential measurement in monitoring eye health of diabetic patient. In this paper, preliminary result of oxygen saturation measurements for a healthy patient retina is presented. The retinal oximeter used is based on a regular fundus camera to which was added an optimized optical train designed to perform aperture division whereas a filter array help select the requested wavelengths. Hence, nine equivalent wavelength-dependent sub-images are taken in a snapshot which helps minimizing the effects of eye movements. The setup is calibrated by using a set of reflectance calibration phantoms and a lookuptable (LUT) is computed. An inverse model based on the LUT is presented to extract the optical properties of a patient fundus and further estimate the oxygen saturation in a retina vessel.

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Paul Lemaillet, Art Lompado, Mohamed Ibrahim, Quan Dong Nguyen, and Jessica C. Ramella-Roman "Retinal oximetry with a multiaperture camera", Proc. SPIE 7550, Ophthalmic Technologies XX, 755021 (2 March 2010); https://doi.org/10.1117/12.841980

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