Of the 23 eyes with optic disc coloboma, the choroidal involvement was seen in 21 eyes and microphthalmia was present in 12 eyes.

• 在视神经盘缺损的23只眼睛中，其中21只眼睛同时有涉及到脉络膜的缺损，12只眼睛存在有小眼症。