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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク least distance of distinct vision ： ウィキペディア英語版 least distance of distinct vision In optometry, the least distance of distinct vision (LDDV) or the reference seeing distance (RSD) is the closest someone with "normal" vision (20/20 vision) can comfortably look at something. In other words, LDDV is the minimum comfortable distance between the naked human eye and a visible object. g power (''M'') of a lens with focal length (''f'' in millimeters) when viewed by the naked human eye: :$=\; \backslash frac.$ ==See also== *Optometry *Far point *Snellen chart *Visual perception *Visual impairment 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「least distance of distinct vision」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.