Figure 2.

Comparison of CFP and FA for detecting and measuring GA. (A) Color photograph of an eye with GA, in which the fundus is lightly colored, allowing the choroidal vessels to be seen under areas of GA as well as intact RPE. In this case, it is difficult to delineate GA from color photography alone. (B) The areas of atrophy and depigmentation are more clearly distinguished on the corresponding fluorescein angiogram. (C) Color photograph from an eye with several areas of GA with multiple drusen and areas of depigmentation and hyperpigmentation obscuring the borders of atrophy. It is difficult to determine the exact margins of GA from color photography alone. (D) The borders of GA and the spared areas of the fovea in between the lesions are more apparent on the corresponding fluorescein angiogram.