Fig. 9.

(Upper panels) Retinal images of a 48 year old Japanese male with a PED. (Top left) Single panel from the crossed detector, showing a strong return at specific locations that do not correspond to regions of strong light return in the other image types in the middle and right columns. (Top middle) Average image, with increased emphasis on the more superficial components and better visualization of the fluid than in the depolarized light image. (Top right) Maximum of the parallel detector. (Bottom left) Birefringence image, showing a disrupted macular cross and fringes in a concentric pattern around the lesion. (Bottom middle) Maximum of the crossed detector, indicating that the phase producing the maximum of the input orientation angle does not have as strong and regular macular cross as a normal subject but has concentric fringes that vary in amplitude but not color. The birefringence changes seen as different in color do not correspond to a single anatomic feature that is readily visible in the top middle image but instead extend horizontally to the left of the lesion. (Bottom right) Maximum of the parallel detector, again showing variations in polarization content and concentric fringes. (Lower panels) Left, OCT image of PED, showing the fluid elevating the retina; right, sampling region, showing that the scan data traverse the center of the PED.