摘要: Similar ocular defects in a mother and two children are described. There had been no previous history of like muscle condition either the father's or mother's family. The literature on hereditary ptosis was studied by authors who make following classification anomalies found: 1. congenital ptosis, 2. with external ophthalmoplegia, 3. noncongenital 4. epicanthus. From Division Ophthalmology, Stanford University Medical School.