Logarithmic visual acuity charts: reasons to use and how to design it

被引：7

作者：

Messias, Andre ^{[1
]}

Jorge, Rodrigo ^{[1
]}

Velasco e Cruz, Antonio Augusto ^{[1
]}

机构：

[1] Univ Sao Paulo, Fac Med Ribeirao Preto, Dept Oftalmol Otorrinolaringol & Cirurgia Cabeca, BR-14049900 Ribeirao Preto, SP, Brazil

来源：

ARQUIVOS BRASILEIROS DE OFTALMOLOGIA | 2010年 / 73卷 / 01期

关键词：

Visual acuity/classification; Optometry/instrumentation;

D O I：

10.1590/S0004-27492010000100019

中图分类号：

R77 [眼科学];

学科分类号：

100212 ;

摘要：

Visual acuity represents the visual angle or the smallest distance between two points that allows their discrimination as separated points. Although it is the most common clinical measurement of visual function, it is often misunderstood, especially due to the variety of charts and different notation systems employed for its quantification. This article reviews some concepts about visual acuity measurement, the main notation systems, type of charts and discuss the advantages of using logarithmic scales.

引用

页码：96 / 100

页数：5

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