Main types of bull's eye maculopathy. Functional classification.

Bull's eye maculopathy is a non-specific reaction of the posterior pole of the eye. The concentric dispersion of pigment occurs when the disease interferes with the function of the retinal pigment epithelium. The site of the primary process may be the bipolar cell layer, the receptor cell layer or the retinal pigment epithelium. By means of electrodiagnostic techniques and color vision testing the site of the primary lesion as a rule can be retraced.