because one patient only suffers from iris coloboma instead of aniridia, we would like to propose that the primary embryological defect is due to aberrant development of mesoderm 网膜发育不良,角膜变性,白内障及续发性青光眼是常见使视力变坏的因素。
method / participants : reporting one case with iris coloboma and a chorioretinal coloboma in his right eye which was noted incidentally during operation for his spontaneous retinal detachment 此病人除了右眼视网膜脉络膜呈现缺损,右眼之虹膜亦于鼻下侧方向有钥匙孔状缺损。