Dominant macular colobomata. 
Hereditary bilateral macular colobomata are not a consequence of an anomalous closure of the fetal fissure.  Their extreme rarity, their lack of embryological explanation, and their morphologic similarity to postinflammatory congenital macular scars called the hereditary-malformative etiology of this entity in question.  The authors describe a four generation family with seven affected members with isolated autosomal dominant bilateral macular colobomata.