Detector for testing eyesight of human body and color blindness

Abstract

The invention provides a detecting device for testing the eyesight of human eyes and for detecting color blindness. The device comprises a control mainframe, a test information display screen, a keypad at an input end, and a supervisory computer at an output end or another display screen which can display and record a testing result. In the detecting device, a fixedly printed visual testing chart is replaced by the test information display screen controlled by a single-chip; and the test information display screen can random display multi-directional letter ''E'' or ''C'' and pictures of different colors, so as to instantly test the human eyes. The detection is judged automatically by the single-chip, the result is displayed or printed, and the eyesight and the color discrimination ability of a testee are faithfully and objectively recorded. The detecting device can not only save work force, but also effectively avoid the disadvantage of false testing result, and is convenient for the computerized management of physical-examination materials. Therefore, the device is a safe, reliable, and effective detecting device for testing the eyesight of human eyes and for detecting color blindness.

Description

technical field [0001] The invention relates to a device for detecting the visual acuity and color recognition ability of human eyes by using the CPU single-chip microcomputer technology. Background technique [0002] In the physical examination, while the medical personnel test the visual acuity of the human eye, they usually also test the ability of the human eye to recognize colors to detect whether the testee suffers from color blindness. When testing human eye vision, a staff member points to the eye chart with the word "E" or "C" printed on it, and within a certain distance, the subject is asked to answer the "E" in the eye chart pointed to by the staff member. The direction of the word "C" or "C", and the staff judge whether the direction of the word "E" or "C" in the eye chart pointed by the testee is correct or not, to determine the degree of vision of the testee's eyes. With this method to detect the vision of the human eye, the staff is prone to fatigue when they...

AI Technical Summary

Problems solved by technology

In order to overcome the time-consuming detection of human eyes by the above-mentioned method and equipment, the labor intensity of the staff is high, and the deficiency that the eye vision degree information tested by the testee deviates from the facts, the present invention improves and provides a single-chip microcomputer using a CPU. A device that detects human eyesight and color recognition ability with technology and software

Images