ANSI Z80.21 : 2010现行
OPHTHALMICS - INSTRUMENTS - GENERAL-PURPOSE CLINICAL VISUAL ACUITY CHARTS
出版：Optical Laboratories Association
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基本信息
标准编号： ANSI Z80.21 : 2010
标准类别：Standard
出版单位：Optical Laboratories Association
标准页数：0
标准简介
Pertains to displays of optotypes for all clinical visual acuity measurement systems that use recognition of high-contrast optotypes and that are designed for general use including optotypes printed on opaque media, those intended for transillumination, electronically generated or projected displays.
