Patent ID: 9596985
Date: 2017-03-21
CPC Classifications: A61B

Claim:
1. Color-viewing function measuring means that indicates a plurality of targets that are colored in chromatic colors on a background and color vision and/or a color-viewing field that is a color-viewing function of an examinee is measured by testing whether the examinee can perceive each target, comprising: a display that is comprised of at least one of a liquid crystal display, a plasma display, an organic EL display and a CRT, a background indicator that indicates the background on the display, a target indicator that indicates the targets having a predetermined brightness, a predetermined color and a predetermined size on the display, an indication time controller that restricts time to indicate the target through the target indicator, a perception detector that outputs signal indicating that the examinee perceived the indicated target, and a color-viewing function judger that judges the color vision and/or the color-viewing field based upon the signals from the perception detector, wherein the background is an achromatic color, 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 the brightness of the targets being almost equal to the brightness of the background; whereby color vision and/or a color-viewing field regarding the chromatic color is measured.