例1 先证者,男4岁。自幼双眼视力差,颤动不停,眼球小、伴有眼斜视,于1994年6月23日就诊。查体:智力正常,一般体检无明显异常发现。眼部检查:视力:右眼无光感,左眼检查不合作,但可视物到处玩耍。双眼呈不自主水平震颤。右眼内斜约45°,外展受限。双眼球小于正常,角膜横径右眼6mm,左眼8mm。右眼颞下方7点处圆形角膜白斑约2mm~2,呈瓷 Example 1 Proof, male 4 years old. Early childhood poor eyesight, fibrillation non-stop, the eye is small, accompanied by ocular strabismus, in June 23, 1994 treatment. Physical examination: normal intelligence, no obvious physical examination found abnormalities. Eye examination: visual acuity: the right eye no light sense, the left eye check uncooperative, but the visual thing to play around. Eyes involuntary tremor. Right eye oblique about 45 °, abduction limited. Eyes less than normal, corneal diameter 6mm right eye, left eye 8mm. Right eye below the 7 oval temporal cornea white spot about 2mm ~ 2, was porcelain