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马×男9岁双眼视力障碍,1983年6月9日入院。两眼瞳孔区变白,右眼10个月,左眼5个月,只能分辨明暗。患儿系第一胎足月顺产。其母妊娠期正常。无服药史。父母系表姨姊弟联姻。家族中无类似病人。生后发育迟缓,2岁时尚不能走路。4岁时开始学走路,至今尚不能单独行走。4岁时仅能说简单语句,吐字不清楚。智力明显低下。体检:身长104cm。体重17.5kg。毛发
Male × Male 9 years old binocular vision disorders, June 9, 1983 admission. Two pupil area white, right eye 10 months, left eye 5 months, only to distinguish between light and darkness. Children with full-term first-term fetus. The mother of normal pregnancy. No medication history. Parents and sisters aunt sister marriage. No similar family in the patient. Stunted growth after birth, 2-year-old fashion can not walk. 4 years old began to learn to walk, still can not walk alone. 4 years old can only say simple sentences, articulation is not clear. Intelligence is obviously low. Physical examination: length 104cm. Weight 17.5kg. Hair