Teoh S L, Allan D, Dutton G N, Foulds W S
Department of Ophthalmology, National University of Malaysia, Kuala Lumpur.
Br J Ophthalmol. 1990 Apr;74(4):215-9. doi: 10.1136/bjo.74.4.215.
The visual acuity, the difference in sensitivity of the two eyes to light (brightness ratio), and contrast sensitivity were assessed in 28 patients with chronic open angle glaucoma and compared with those of 41 normal controls of similar ages and visual acuity. The results obtained were related to the results of Tübingen visual field analysis in patients with glaucoma. Twenty-four of the 28 glaucoma patients (86%) had a significant disparity in brightness ratio between the two eyes. This was found to match the frequency of visual field loss. Moreover, there was a significant relationship between the interocular differences in brightness sense and the difference in the degree of visual field loss between the two eyes. Of the glaucoma patients 39% had sum contrast sensitivities outside the normal range for age-matched normal controls. No significant correlation was found between the interocular difference in brightness sense and the visual acuity or the interocular difference in sum contrast sensitivity. It is concluded that, in the presence of a normal visual acuity, the brightness ratio test warrants evaluation as a potential screening test for chronic open angle glaucoma.
对28例慢性开角型青光眼患者的视力、双眼对光敏感度差异（亮度比）和对比敏感度进行了评估，并与41名年龄和视力相似的正常对照者进行了比较。所得结果与青光眼患者的图宾根视野分析结果相关。28例青光眼患者中有24例（86%）双眼亮度比存在显著差异。发现这与视野缺损的频率相符。此外，双眼亮度感觉差异与双眼视野缺损程度差异之间存在显著关系。39%的青光眼患者总的对比敏感度超出了年龄匹配正常对照者的正常范围。在亮度感觉的眼间差异与视力或总的对比敏感度的眼间差异之间未发现显著相关性。结论是，在视力正常的情况下，亮度比测试值得作为慢性开角型青光眼的一种潜在筛查测试进行评估。
