老年人视网膜周边囊样变性,多见于50岁以上者,在其小囊肿基础上发展成一种巨大囊样变性,称为视网膜劈裂症。此症多为双眼对称与屈光无明显关系,常位于视网膜颞下方,病人无自觉症状,如发展到后极,可出现:眼前飞蚊、闪光、视力减退等症状。本院曾遇一例,现报道如下。患者陈某,男,58岁,左眼视力减退,飞蚊幻视,闪光感近来加重于1991—11—10来院就诊。此患无血族联姻史,其它家人视力皆正常。查体:右眼视力:5.1,左眼视力:0.06,不能矫正,双眼球运动自如,眼位正,角膜透明,前房深浅正常,虹膜纹 Peripheral retinal degeneration of the elderly, more common in people over the age of 50, in its small cysts on the basis of the development of a huge cystic degeneration, called retinal splitting disease. This disease is mostly binocular symmetry and refractive no significant relationship, often located in the temporal retina, the patient without symptoms, such as the development of the posterior pole, there may be: the immediate fly, flash, vision loss and other symptoms. This hospital has encountered a case, it is reported as follows now. Patient Chen, male, 58 years old, left eye vision loss, floaters visual hallucinations, flash sense has recently increased in 1991-11-10 to hospital. This history of no blood marriage, other family members are normal vision. Examination: right eye vision: 5.1, visual acuity of the left eye: 0.06, can not be corrected, the ease of movement of both eyes, the eye position is positive, the cornea is transparent, the anterior chamber shades normal iris