提供商：Silverchair数据库：theassociationForresearchInvisionInvisionandophthalmology content：text/plain;charset =“ utf -8” ty -jour au -schulze -bonsel，kilian au -feltgen，nicolas au -burau，hermann au -Hansen，Hansen，Lutz au -Bach，Michael T1-视力“手动”和“计数手指”和“计数手指”可以使用Freiburg Visual Acuity Test PY进行量化-2006 Y1-2006/03/01 DO -10.1167/iovs.05-0981 JO-调查性眼科和视觉科学JA -Invest-投资。眼科。VIS。科学。VL -47 IS -3 SP -1236 EP -1240 SN -1552-5783 AB-目的。具有非常低视力的患者的视力（VA）使用半定量量表“计数手指”（CF），“手运动”（HM），“光感知”（LP）和“无光感知”进行分类。需要更多的定量措施，特别是对于临床研究。比较了临床VA测量结果，早期治疗糖尿病性视网膜病变研究（ETDRS）图表和Freiburg视力测试（FRACT）的结果。 The FrACT is a computerized visual acuity test that can present very large Landolt C optotypes when necessary. methods. Examined were 100 eyes of 100 patients with various eye diseases (e.g., diabetic retinopathy, ARMD), covering a range of VAs from LP to decimal 0.32. The FrACT optotypes were presented on a 17-inch LCD monitor with random orientation. After extensive training, two ETDRS and FrACT measurements were obtained. The testing distance was 50 or 100 cm. results. ETDRS and FrACT coincided closely for VA ≥ 0.02 (n = 80). ETDRS measures were successfully obtainable down to CF (at 30 cm; test–retest averaged over all patients, coefficient of variation [CV]ETDRS= 9% ± 8%), and FrACT provided reproducible measurements down to HM (test–retest CVFrACT=12% ± 11%). For CF (n = 6), both ETDRS and FrACT resulted in a mean VA of 0.014 ± 0.003 (range, 0.01–0.02). The VA results of FrACT for HM (n = 12) were 0.005 ± 0.002 (range, 0.003–0.009); the individual values were highly reproducible. No results were obtainable for LP (n = 2). conclusions. The three acuity procedures concur above a VA of 0.02. The results suggest that the category CF at 30 cm can be replaced by 0.014, using ETDRS or FrACT. Using FrACT, one can even reproducibly quantify VA in the HM-range, yielding a mean VA of 0.005. Y2 - 1/17/2022 UR - https://doi.org/10.1167/iovs.05-0981 ER -