極部
That is, the parents are cousins.Through the fundus examination, we found diffuse yellowish crystal deposits and chorioretinopathy in the posterior pole. 兩病例為姐妹,眼底檢查可見(jiàn)散在性黃白色晶體沈著物,后極部可見(jiàn)脈胳膜網(wǎng)膜變性。