无虹膜症是双眼发育性疾患，主要特征为先天性虹膜发育不良或正常虹膜的缺如，还可伴有多种眼疾，如角膜浑浊、小角膜、晶状体脱位、白内障、青光眼、黄斑发育不良、斜视、眼球震颤等，累及全眼球。
目的：测量一先天性无虹膜家系患者的中央角膜厚度，分析可能的原因。
Objective: To measure the central corneal thickness(CCT) of a family with congenital aniridia and analyze its reason.
结论：先天性无虹膜患者的中央角膜厚度明显增加，中央角膜厚度的增加与角膜内皮细胞无关；
Specular microscope shows normal corneal endothelial cells. Conclusion : The CCT of a family with congenital aniridia thickens clearly. Corneal endothelial cells are not responsible for it.
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