Letter legibility and chart equivalence

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• 作者：McMonnies ; Charles W. ; Ho ; Arthur
• 刊名：Ophthalmic and Physiological Optics
• 出版年：2000
• 出版时间：March 15, 2000
• 年：2000
• 卷：20
• 期：2
• 页码：142-152
• 全文大小：153 K

文摘

Introduction: We tested the appropriateness of the assumption that charts, which only vary in having different sequences of five letters per line, chosen from the same 10 letter set, can be regarded as equivalent for the purpose of making valid comparisons of visual acuity.