Eye chart projection method based on vr technology and vr glasses eye chart projector

Abstract

The invention discloses a VR technology-based visual chart projection method and a visual chart projector for VR eyeglasses and belongs to the technical field of optometry. The visual chart projection method comprises the steps of (a) building a universal international visual chart library in a VR system; (2) building a function relation between each visual chart and the distance projected to a VR display screen, and projecting the visual charts on the VR display screen in a form of a slide; (c) numbering various visual charts in the VR system, and marking and controlling the visual chart play state and playback speed; (d) building a plurality of feedback options for each visual chart in a form of a weighted choice question; (e) further making weighted statistic analysis according to the choice of a user in the step (d), and finally balancing the integrated test vision of the user in an overall scoring form; and (f) outputting and storing a detection report. The method is simple, feasible, reliable and stable, and the visual chart projector is lightweight, convenient, low in cost and convenient to carry.

Description

technical field [0001] The present invention relates to a vision chart projection method and a vision chart projector, and more specifically, to a VR technology-based vision chart projection method and a VR glasses vision chart projector. Background technique [0002] The eye chart projector is a medical auxiliary device with a built-in eye chart for testing the vision of the human eye. It is a visual inspection device that makes various eye charts with different detection functions into slides, so that the optometrist can control and select the required eye chart by remote control and project them on a special screen during optometry inspection. Vision chart projectors are the most common in physical examinations. They are used to test eyesight in work, school, and military service. They are the basis for judging whether the eyeballs have refractive errors or are color blind. The optometrist roughly judges the visual acuity according to the feedback information of the test...

AI Technical Summary

Problems solved by technology

[0005] 2. An eye chart projector needs to be composed of a projector, a display device and a remote control, and the production cost is relatively expensive

And the weight is generally about 5kg, clumsy, not suitable for mobile vision detection

[0006] 3. There is a large demand for vision testing, and almost everyone has more or less contact with it. However, the traditional vision chart projector is poorly connected to the Internet, and it is not convenient to complete the testing and optometry by itself, nor can it intelligently recommend nursing plans for patients, etc.

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