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Central retinal vein occlusion in a patient with familial antithrombin III deficiency: case report.

A 60-year old man with familial antithrombin III deficiency, a primary cause of hypercoagulation, developed central retinal vein occlusion. Familial antithrombin III deficiency is inherited as an autosomal dominant condition. It is characterized by recurrent episodes of thromboembolism. The occurrence of central retinal vein occlusion in a person with familial deficiency of antithrombin III suggests the possibility of a casual relationship.