蓝黄视野在早期青光眼诊断中的意义

目的 :探讨蓝黄视野检测在早期原发开角型青光眼诊断中的应用价值。方法 :采用瑞士产Octo pus10 1型全自动视野计 ,对早期原发性开角型青光眼 3 6例 3 6眼 ,对照组正常人 3 6例 3 6眼进行B/Y及W/W检测 ,两组的年龄及性别相匹配 ,应用tG2 测试程序 ,将中心 3 0°视野内全视网膜光敏感度均值 (dB)进行比较和分析。结果 :两种视野计检测正常人B/Y较W /W检测全视网膜光敏感度均值低 ,二者差值 5 5 1dB ,差异有显著意义 (t =17 13 ,P <0 0 0 1)。早期开角型青光眼B/Y较W/W检测全视网膜光敏感度均值差为6 91dB ,差异有显著意义 (t=12 19,P <0 0 0 1)。按矫正偏差图 (correvtedprobabity)计算P <2以上缺损点数 ,显示B/Y检测总缺损点数为W /W的 2 18倍 ,差异有显著意义 (u =11.46,P <0 0 0 1)。早期青光眼组 3 6只眼B/Y检测视野阳性者 3 1眼 ,阳性率 86 1% ,W /W检测视野阳性者 19眼 ,阳性率 5 2 8%。两种视野计检测结果的异常率有显著差异 ( χ2 =9 43 ,P <0 0 0 1)。结论 :B/Y与W /W检测结果有良好的相符性 ,在早期原发开角型青光眼视野检测中 ,B/Y比W /W敏感 ,以B/Y检测出的缺损面积大而且深 ,可提高早期青光眼诊断的阳性率 ,有一定的应用价值。

The value of blue-on-yellow perimetry in the diagnosis of early glaucoma

Objective: To asses the value of blue-on-yellow perimetry in the diagnosis of early primary open angle glaucoma (POAG).Methods: 36 eyes of 36 patients with early POAG and a group of normal(36 eyes) were examined both by the blue-on-yellow(B/Y) and standard white-on-white(W/W) perimetry.The age and sex in two groups were matched.The program tG 2 was performed on both B/Y and W/W fields in two groups.The mean light sensitive(MS) of the central 30° was analyzed.Results: The difference of MS in central 30° between two perimetries in normal group was 5.51 dB,which showed a statistical significance of difference (t=17.13,P<0.001).And the MS difference between them in early POAG was 6.91dB,which was significant different (t=12.19,P<0.001).According to corrected deviation points which was used to account the difectewd testing points,the defected testing points from B/Y perimetry were 2.18 times of that from W/W perimetry,which was significantly different (u=11.46,P<0.001).In the early primary glaucoma,the positive rate in the abnormal visual field from B/Y?perimetry?was?86.1%(31/36),?which was significantly higher than that?from?W/W?perimetry,52.8%(19/36)(χ 2=9.43,P<0.001).Conclusion: A good coincidence is demonstrated between B/Y and W/W perimetry both in normal and in early open angle glaucoma groups.B/Y perimetry is more sensitive than W/W perimetry in detecting early glaucomatous visual field defects.The positive rate is higher and the defects are larger and deeper in B/Y perimetry than that in W/W perietry.Therefore,B/Y perimetry can detect glaucoma defects earlier.It is suggested that B/Y perimetry be applied in the diagnosis of early glaucoma.