患者男，17岁,自幼左眼塌陷，眼球缺如，下睑有一肿物，逐渐增大。现因患者要求切除肿物就诊。家族中无先天畸形者。父母非亲近结婚，其母亲在怀孕期有夜盲史。全身检查无异常。眼科检查：右眼正常。左眼下睑外翻，眼眶内无眼球结构，结膜平坦，结膜囊极窄。下睑可见一淡蓝色隆 Male patient, 17 years old, his left eye collapsed from his childhood, lack of eye, a tumor of the lower eyelid, gradually increased. Now the patient asked for removal of the tumor treatment. No congenital malformations in the family. Parents are not married, their mothers have a history of night blindness during pregnancy. No abnormalities in the whole body examination Eye examination: right eye is normal. Left eyelid eversion, orbital no eyeball structure, conjunctiva flat, very narrow conjunctival sac. Lower eyelid visible a light blue Long