原发性急性闭角型青光眼患者对比敏感度及色觉改变

目的：观察原发性急性闭角型青光眼临床前期以及急性发作期行窦小梁切除术后对比敏感度(CS)的变化特点及色觉的变化情况。方法：选择原发性急性闭角型青光眼患者临床前期眼35例 (35只眼)、急性发作期术后眼32例（32只眼）和正常对照组15例(30只眼)，应用Optec3500视觉检查仪行对比敏感度和色觉检查，并于术后1个月（31例31只眼）及3个月（28例28只眼）时随访。结果：临床前期组与正常对照组比较，对比敏感度在18 c/d阈限升高(P<0.01)，色觉功能异常(P<0.01)；急性发作期术后15 d组与正常对照组对比敏感度比较在12.0 c/d 、18.0 c/d阈限升高(P<0.01)，色觉功能异常(P<0.01)。结论：对比敏感度和色觉功能检查是青光眼视功能损害较敏感的检测手段。

Changes in contrast sensitivity and color vision in patients with primary acute angle-closure glaucoma

Objective To observe the changes in contrast sensitivity(CS) and color vision in patients with primary acute angle-closure glaucoma(PACG).Methods CS and color vision tests were performed in 35 patients(35 eyes) with preclinical stage of PACG,32 patients(32 eyes) with acute attack stage of PACG and 15 normal subjects(30 eyes).Then patients were followed up 1 month(31 eyes) and 3 months(28 eyes) after operation.Results The results of CS and color vision tests were abnormal in PACG patients when they were compared with those of normal people.The threshold of CS at 18.0 c/d was increased(P<0.01) and color vision was abnormal(P<0.01) in the preclinical stage patients.The threshold of CS at 12.0 c/d and 18.0 c/d were increased(P<0.01)and color vision was abnormal(P<0.01) in the patients 15 d after operation.Conclusion Both CS and color vision are high sensitive parameters for visual function evaluating of glaucoma.