Wolkstein M, Atkin A, Bodis-Wollner I
Ophthalmology. 1980 Nov;87(11):1140-9. doi: 10.1016/s0161-6420(80)35112-9.
Central vision in patients with retinal disorders has been studied with sinusoidal grating patterns. Impaired detection of fine high-contrast gratings has been observed in patients with retinitis pigmentosa and glaucoma despite 20/20 vision. Abnormal contrast sensitivity to coarse gratings occurred in patients with certain macular disorders and occasional glaucoma patients, some with near-normal Snellen acuity. Thus, contrast sensitivity measurements demonstrate central visual deficits not apparent with Snellen testing.
已经使用正弦光栅图案对视网膜疾病患者的中心视力进行了研究。尽管视力为20/20，但在色素性视网膜炎和青光眼患者中观察到对精细高对比度光栅的检测受损。在某些黄斑疾病患者和偶尔的青光眼患者中，对粗光栅出现了异常的对比敏感度，其中一些患者的斯内伦视力接近正常。因此，对比敏感度测量显示出斯内伦测试未发现的中心视觉缺陷。
