Pigmented macular pucker.

A 66-year-old woman developed a darkly pigmented preretinal membrane. In the fundus periphery there was a round retinal hole about one disk diameter with pigmentation in its immediate vicinity. Pigmented, preretinal membranes arise from retinal pigment epithelium cells that exit through a retinal tear and settle on the inner retinal surface where they proliferate and form a membrane. Some preretinal membranes arise from unpigmented cells such as glial cells and become colored with iron pigment because of the accumulation of pigmented macrophages and free pigment debris. A retinal hole is not necessary for the occurrence of a glial membrane.