Handheld vision detecting device and vision detecting method

Abstract

The invention discloses a handheld vision detecting device which at least comprises an imaging lens set and a vision chart, wherein the imaging lens set is composed of at least one imaging lens. The cornea of a detected person can be located at the position of the focus on one side of the imaging lens set, the center of the vision chart is arranged on the other side of the imaging lens set, and the vision chart can move in a front-and-back mode along a light path. The invention further discloses a vision detecting method and the steps which can measure various visions with the handheld vision detecting device without wearing glasses. By means of the device, the functions that the naked eye vision is measured, the corrected vision is measured, the worn-glass degree are measured when the corrected vision achieves 1.0, the low vision and the weak vision are detected, and the astigmatism is detected can be achieved. By means of the handheld vision detecting device and the vision detecting method, users can detect the vision at any time and any place, the detecting results are accurate, and the operation is conveniently and easily achieved.

Description

technical field [0001] The invention relates to the technical field of optometry instruments, in particular to a vision testing device and a method for using the vision testing equipment to perform vision testing. Background technique [0002] At present, most of the eye charts used for testing eyesight on the market are printed eye charts. Although there are many forms of this kind of eye chart, the practical eye chart must be in a fixed place, a large space and an environment with standard eye chart brightness. , before the vision test can be performed. From the perspective of the subject of visual acuity testing, when people feel that there may be a problem with their vision, they will do the testing. The consequences of this passive testing often bring unpleasant effects to health and life. If the change from passive detection to active detection, from an objective and necessary detection environment to self-testing everywhere, it will provide a great guarantee for peop...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a hand-held vision detection device, aiming to solve the problems that the visual acuity detection cannot be performed anytime and anywhere and the visual acuity detection process is cumbersome due to place restrictions

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