Singh H, Cooper R L, Alder V A, Crawford G J, Terrell A, Constable I J
Br J Ophthalmol. 1981 Aug;65(8):518-24. doi: 10.1136/bjo.65.8.518.
The Arden contrast sensitivity was investigated in normal persons, cataract eyes, and glaucoma patients with only plates 6 and 7 of the Arden grating set. The mean score of 90 normal eyes on plate 6 was 9.50 +/- 2.29 and on plate 7 it was 9.44 +/- 2.32. The mean scores of patients with early cataract were 14.51 +/- 2.99 on plate 6 and 13.74 +/- 3.26 on plate 7. Several patients with cataract missed the grating on plate 7. Mydriasis and miosis did not affect contrast sensitivity in normal eyes. Mydriasis significantly improved contrast sensitivity in patients with early cataract. In patients with glaucoma enlargement of the pupil from a miotic state to near normal size significantly improved contrast sensitivity. It is predicted that if plate 6 and 7 are used in mass screening for glaucoma in the elderly, there will be a false negative rate of 83% for plate 6 and 52% for plate 7. A false positive rate of 17% is predicted.
仅使用阿登光栅组的第6和第7块板对正常人、白内障患者和青光眼患者的阿登对比敏感度进行了研究。90只正常眼睛在第6块板上的平均得分为9.50±2.29,在第7块板上为9.44±2.32。早期白内障患者在第6块板上的平均得分为14.51±2.99,在第7块板上为13.74±3.26。几名白内障患者在第7块板上未看到光栅。散瞳和缩瞳不影响正常眼睛的对比敏感度。散瞳显著提高了早期白内障患者的对比敏感度。在青光眼患者中,瞳孔从缩瞳状态扩大到接近正常大小显著提高了对比敏感度。预计如果在老年人青光眼的大规模筛查中使用第6和第7块板,第6块板的假阴性率将为83%,第7块板为52%。预计假阳性率为17%。