Enhanced depth spectral-domain optical coherence tomographic (EDI-OCT) images of the choroid of an amblyopic eye and a control eye.

(A) Representative image of the amblyopic eye. The amblyopic eye has large luminal area. (B) Representative image of the control hyperopic eye. The control hyperopic eye has small luminal area. The choroidal area measured was 1500 μm wide with the margins 750 μm nasal and 750 μm temporal to the fovea. Vertically, the area extended from the retinal pigment epithelium to the chorioscleral border (yellow line). The measured area of the choroid is demarcated (Top). The image is converted to a binary image by the Niblack method of ImageJ (Middle). The dark area which is luminal area is traced by the red line (Bottom).