Idiopathic preretinal fibrosis with concurrent cystoid macular edema.

Idiopathic preretinal fibrosis is a common disorder which typically affects elderly individuals. The epiretinal membranes are of glial origin in the retina where they migrate through breaks in the internal limiting membrane to form fibroglial sheets on the surface of the retina. Although visual symptomatology is rare, the epiretinal membranes may, in some instances, grow rapidly and contract causing tractional changes to occur involving the underlying retina and retinal vessels. This paper presents a case of preretinal fibrosis with accompanying cystoid macular edema and consequent dramatically reduced vision. The diagnosis, pathophysiology and management of preretinal fibrosis are discussed.