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发帖数: 9567 | 1 Visual acuity scales
Foot Metre Decimal LogMAR
20/200 6/60 0.10 1.00
20/160 6/48 0.13 0.90
20/120 6/36 0.17 0.78
20/100 6/30 0.20 0.70
20/80 6/24 0.25 0.60
20/60 6/18 0.33 0.48
20/50 6/16 0.40 0.40
20/40 6/12 0.50 0.30
20/30 6/9 0.67 0.18
20/25 6/7.5 0.80 0.10
20/20 6/6 1.00 0.00
20/15 6/4.8 1.25 -0.10
20/12 6/3.6 1.67 -0.22
20/10 ... 阅读全帖 |
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