Lin S, Reiter K, Dreher A W, Frucht-Pery J, Feldman S T
Department of Ophthalmology, University of California, San Diego, School of Medicine, La Jolla 92093.
Am J Ophthalmol. 1989 Apr 15;107(4):407-10. doi: 10.1016/0002-9394(89)90665-x.
To detect subtle changes in visual acuity, we measured spatial contrast sensitivity in 12 patients with pterygium (Group 1) and compared their results with those from an age- and sex-matched control population (Group 2). Glare disability was also measured in each group. Measurements of contrast sensitivity were lower in Group 1 at all spatial frequencies than those of Group 2, independent of the testing device used. Glare disability was significantly increased in Group 1 compared to Group 2. Our studies indicate that contrast sensitivity and glare disability testing may provide additional objective methods for documenting impaired vision in patients with pterygium when Snellen visual acuity is minimally affected.
为检测视力的细微变化，我们对12例翼状胬肉患者（第1组）进行了空间对比敏感度测量，并将其结果与年龄和性别匹配的对照人群（第2组）的结果进行比较。同时也对每组患者的眩光失能情况进行了测量。无论使用何种测试设备，第1组在所有空间频率下的对比敏感度测量值均低于第2组。与第2组相比，第1组的眩光失能显著增加。我们的研究表明，当斯内伦视力受影响极小时，对比敏感度和眩光失能测试可为记录翼状胬肉患者的视力受损情况提供额外的客观方法。
