Color-viewing function measuring means and color-viewing function measurement system
AssigneesShinshu University, Kowa Company, Ltd.
InventorsKazuo Ichikawa, Kiyoshi Tanaka, Tanaka Yoshiki Tanaka
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Abstract
[Problem] To be able to accurately measure color vision and color-viewing field for different colors. [Solution] The color-viewing function measuring means (1) pertaining to the present invention displays a plurality of chromatically colored targets (A11, . . . ) (for example, Landolt rings) in an achromatic background (B), the brightness of the targets (A11, . . . ) being set so as to be substantially equal to the brightness of the background (B). When vision or the viewing field is measured with this color-viewing function measuring means (1), vision and viewing field can be accurately measured for different colors.
Claims18
Color-viewing function measuring means that indicates a plurality of targets that are colored in chromatic colors on a background and is possible to measure color vision and/or a color-viewing field that is a color-viewing function of an examinee by testing whether the examinee can perceive each target, comprising:
- all of the plurality of targets or at least a predetermined number of the plurality of targets being colored in almost the same chromatic color;
- and
- brightness of the targets being set so as to almost equal to brightness of the background;
- whereby it is possible to measure color vision and/or a color-viewing field regarding the chromatic color.
Dependencies are inferred from the claim text.