Imaging polarimetry and retinal blood vessel quantification at the epiretinal membrane

Abstract

We evaluated a polarimetry method to enhance retinal blood vessels masked by the epiretinal membrane. Depolarized light images were computed by removing the polarization retaining light reaching the instrument and were compared with parallel polarized light images, average reflectance images, and the corresponding images at $514\mathrm{nm}$. Contrasts were computed for retinal vessel profiles for arteries and veins. Contrasts were higher in the $514\mathrm{nm}$ images in normal eyes but higher in the depolarized light image in the eyes with epiretinal membranes. Depolarized light images were useful for examining the retinal vasculature in the presence of retinal disease.

© 2007 Optical Society of America

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