先天性下直肌缺如一例刘新荣男，８岁。自出生后发现右眼向上斜，未经治疗。全身体检正常。视力：右０３，左１０，不能矫正。无复视。眼位：右眼外上斜，３３ｃｍ，－１５△Ｒ／Ｌ５０△，右注视不良。右眼下转及外下转均受限，瞳孔中央不能达水平中线；上转及外上转... Congenital inferior rectus absent a case of Liu Xinrong male, 8 years old. Right eye after birth was found oblique upward, untreated. Physical examination normal. Eyesight: right 0  3, left 1  0, can not be corrected. No diplopia. Eye position: right eye outside the oblique, 33cm, -15 △ R / L50 △, right bad view. Right eye turn and outer turn limit are limited, the center of the pupil can not reach the level of the center line;