1病例报告患者女,7岁。主因夜间视物不清3年、加重半年,于2011年2月15日来我院就诊。患者父母于3年前发现患儿夜间视物不清,未予重视,近来加重。患儿自患病以来未曾于外院就诊。患儿为足月顺产,父母非近亲婚配,家族中无类似患者,神志清楚,查体合作。眼科检查:右眼视力0.8,结膜无充血,角膜下方有一云翳,直径约1mm;左眼视力0.9,角膜透明。2只眼均前房深可,房闪阴性,虹膜纹理清晰,晶状体及玻璃体透明。双眼散瞳:视盘界清色可,黄斑中心凹反射可见,视网膜遍布圆形或近圆形的白色小斑点,未侵及黄1ERG 1 case report patient female, 7 years old. Mainly due to unclear at night 3 years, increased six months, in February 15, 2011 to our hospital. 3 years ago, parents of patients found that children with blurred vision at night, did not pay attention, has recently increased. Children have not been treated outside the hospital since their illness. Children with full-term follow-up, non-relatives of the marriage of the parents, no similar family of patients, conscious, physical examination. Eye examination: right eye vision 0.8, no congestion of the conjunctiva, cornea below a cloud 翳, diameter of about 1mm; left eye vision 0.9, corneal transparency. 2 eyes were anterior chamber depth can be, room was negative, clear iris texture, lens and vitreous transparent. Eyes dilated: clear the optic disc sector can be seen foveal reflex visible around the retina round or nearly white small spots, did not invade yellow 1ERG