我国闭角型青光眼约占原发性青光眼74.7～80.37%,是失明的主要原因之一。如能早期对其确定诊断无疑是十分重要的。但是,对眼压正常或可疑状态下的早期闭角青光眼做出确定的诊断并非容易。1984年2月至1986年2月,我们对可疑闭角青光眼采用2小时遮盖闭眼暗室试验、阳性率达到91.2%,从而使一些闭角青光眼病人得以早期发现,早期治疗。 Angle-closure glaucoma in our country accounts for 74.7 ~ 80.37% of primary glaucoma, which is one of the main causes of blindness. If early diagnosis can be undoubtedly very important. However, it is not easy to make a definitive diagnosis of early-angle closure glaucoma in normal or suspect IOP conditions. From February 1984 to February 1986, we tested the closed-circuit darkroom for 2 hours in suspected closed-angle glaucoma with a positive rate of 91.2%, so that some patients with closed-angle glaucoma could be detected early and treated early.