NEW METHOD BASED ON RANDOM LUMINANCE MASKING FOR MEASURING ISOCHROMATIC ZONES USING HIGH-RESOLUTION COLOR DISPLAYS

被引：49

作者：

BIRCH, J

BARBUR, JL

HARLOW, AJ

机构：

[1] Applied Vision Research Centre, City University, London, ECIV 0HB, Northampton Square

来源：

OPHTHALMIC AND PHYSIOLOGICAL OPTICS | 1992年 / 12卷 / 02期

关键词：

D O I：

10.1111/j.1475-1313.1992.tb00275.x

中图分类号：

R77 [眼科学];

学科分类号：

100212 ;

摘要：

A new method of measuring normal hue discrimination ellipses and dichromatic zones using a high resolution colour monitor is described. The test involves the detection of chromatic bars on a grey background (x = 0.305, y = 0.323) having a luminance of 34 cd m-2. Elements of the background matrix of square checks are varied randomly in luminance in space and time to provide random luminance masking (RLM) which compensates for differences in the relative luminous efficiency of different observers. The measurement technique provides a rapid and comprehensive colour vision test. Typical results are presented for normal trichromats, protanopes and deuteranopes without RLM and with the RLM set of 25%. The size of the discrimination ellipse in normal observers is the same in both viewing conditions, but the use of the RLM technique reveals the extent of the isochromatic zones in colour deficient observers.

引用

页码：133 / 136

页数：4

共 8 条

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