Reticular dystrophy is a disorder of protean manifestations occurring in the retinal pigment epithelium (RPE) with little or no involvement of the neurosensory retina. The disorder may be detected at an early age and may be slowly progressive, but the prognosis for visual acuity is good. Abnormalities of dark adaptation and nyctalopia may develop with time. Electrophysiologic testing may show a normal electroretinogram (ERG), subnormal electrooculogram (EOG), and subnormal results of dark adaptation studies (summary by Kingham et al., 1978). [from OMIM]