A超活体结构测量在原发性闭角型青光眼诊断和治疗中的临床意义

目的 :应用A超活体结构测量检查原发性闭角型青光眼 (PACG) ,以了解PACG和睫状环阻滞性青光眼的前房深度、晶体厚度、眼轴长度及晶体相对位置的量化关系。方法 :应用A超检测急闭青、慢闭青和正常眼各 2 8例 5 6眼 ,睫状环阻滞性青光眼 7例 8眼术前的活体眼前节结构 ,并对其测量参数进行对比研究。结果PACG前房浅 (2 0mm左右 )、眼轴短 (2 2mm左右 )、晶体较厚 (4 7mm左右 )、晶体相对位置靠前 (0 197左右 ) ,可以作为诊断PACG的客观指标之一。急闭青与慢闭青比较、急闭青中同一患者的急发眼与临床前期眼比较 ,前房更浅、晶体相对位置更靠前 ,睫状环阻滞性青光眼前房最浅 (1 5mm左右 )、眼轴最短 (2 1mm左右 )可以作为睫状环阻滞性青光眼发生的“高危因素”。结论 :A超活体结构测量在原发性闭角型青光眼、特别是睫状环阻滞性青光眼的发生、诊断及判定预后方面有重要的客观价值。

Clinical significance of a scan test in diagnosis and treatiment of primary angle-closure glaucoma

Objective: To study the primary angle closure glaucoma(PACG)and to observe the relations of PACG and malignant glaucoma in anterior chamber depth、lens thickness、axial length and relative position of lens,. Authors made use of Ascan test. Methods: 56 eyes from 28 patients with acute angle closure glaucorna were evaluated and compared with the same eyes from the same cases with chronic angleclosure glaucoma and normal eyes in measure parameters. Results: Shallower anterior chamber(20mm or so)、shorter axial length(22mm or so)、thickerlens(4.7mm or so) and a little front relative position of lens(0.197 or so)may be one of the objective indexes which diagnose PACG.TO compare acute angle closure glaucoma with chronic angleclosure glaucoma, the anterior、shamber is shallower, the relative positon of lens is a little front, as well as the acute angle closure glauclma′s acute stage eyes and clinical earlier stage eyes, Madignant glaucoma has the shallowest anterior chamber(1.5mm or so)and has the shortest axial length(21mm or so).These may be high danger factors that cause malignant glaucoma. Conclusions: It is much more valuable to judge the occurrence 、the diagnosis and the outcome of PACG, especially, to maligmant glaucoma.