Color vision detector

Abstract

The invention discloses a color vision detector comprising a casing, a display and a control device, wherein the display is arranged in the casing; and the control device is arranged in the casing, coupled to the display, used for controlling the display to display a color vision check chart which corresponds to different color blindness varieties and is identified by a person to be checked to determine the color blindness variety of the person, and also used for controlling the display to quantificationally change the tricolor ratio of the color vision check chart to be identified by the person to be checked to determine the color blindness grade of the person. According to the invention, the color vision colors of human beings are digitized; pseudo color blindness, total color blindness, two kinds of color blindness of Ar, Ag and Ab with lower primary colors, one kind of color blindness of Br, Bg and Bb with lower primary colors and the grade thereof are rapidly checked according to the digitizing definitions of the color blindness variety and the grade, the color blindness rectification effect can be verified, and a check result and a rectification recipe also can be printed.

Description

technical field [0001] The invention belongs to the field of medical equipment, and more specifically relates to an ophthalmic optical instrument used for color vision detection and color blindness correction effect verification. Background technique [0002] There are 4 traditional tools and methods for color vision inspection: color vision inspection chart, color discrimination checker, slide lamp inspection, and color blindness inspection mirror. None of these methods can carry out quantitative inspection on color blindness, and the error of the detection result is very large. In recent years, some people are developing color vision detection instruments. Related invention patent documents include: Chinese Patent No.00136472.3 with the title of "Color Vision Detection / Correction Method and Equipment and Its Application", and the title of invention is "Method and device for detecting / correcting color vision and their application” US Patent US7,198,369, and Chinese Patent ...

AI Technical Summary

Problems solved by technology

However, the color vision detection instruments disclosed in the above-mentioned documents are not limited to citing the published color vision test charts or self-compiled charts, or are based on the color matching comparison of the upper and lower semicircles to diagnose the types and steps of color blindness

Because these methods do not quantify the color of color vision, the error of color vision test results is relatively large, and they cannot quickly and accurately diagnose achromatopsia, color blindness with two low primary colors, and color blindness with a low primary color in a large-scale physical examination. Detection effect

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