RT Journal文章A1 Schulze-Bonsel，Kilian A1 Feltgen，Nicolas A1 Bulau，Hermann A1 Hansen，Lutz A1 Bach，Michael T1视力“手动”和“计数手指”可以通过Freiburg视力测试JF调查眼科＆“Counting手指”。Visual Science Jo Invest。眼科莫尔。vis。SCI。YR 2006 DO 10.1167 / IOVS.05-0981 VO 47是3 SP 1236 OP 1240 SN 1552-5783 AB AB AB AB目的。使用非常低的视觉患者的视力（VA）是使用半定量尺度“计数手指”（CF），“手动动作”（HM），“光感知”（LP）和“无光感知”的患者进行分类。对于临床研究，可能需要更多的定量措施。比较临床VA测量，早期治疗糖尿病视网膜病变（ETDRS）图表和弗赖堡视力试验（粉碎）的结果。粉末是一种计算机化的视力测试，必要时可以呈现非常大的Landolt C Optotypes。 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. RD 1/16/2022 UL https://doi.org/10.1167/iovs.05-0981