05655810-n 'normal visual acuity, as measured by the ability to read charts at a distance of 20 feet';
 
English twenty-twenty , 20/20
Definitions
Japanese
20フィートの距離でチャートを読む能力により測定されるような正常な視力
English
normal visual acuity, as measured by the ability to read charts at a distance of 20 feet
Relations
Hypernym: acuity
Semantic Field: cognitionn
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