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A memorize-proof visual chart

An eye chart and vision technology, applied in medical science, eye testing equipment, diagnosis, etc., can solve problems such as unreal test results and unfavorable vision protection, and achieve the effect of protecting vision, benefiting vision problems, and improving authenticity.

Inactive Publication Date: 2019-01-04
XUCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The current eye charts are all fixed designs, and the test patterns have a fixed arrangement structure. Therefore, in order to obtain good vision test results, some people cheat in the vision test by reciting the vision chart patterns, making the test results Not true and not good for eyesight protection

Method used

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Examples

Experimental program
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Embodiment Construction

[0016] It should be understood that there are two types of traditional eye charts, one is printed on paper, and the other is displayed on a light box, but whether it is printed on paper or displayed on a light box, they are all arranged in a fixed structure, and people can By reciting and memorizing the eye chart with fixed structure and arrangement to artificially intervene and improve one's own vision value test value.

[0017] It should be understood that the traditional eye chart is a long strip structure in the up and down direction. People stand 5 meters or 3 meters away from the eye chart, and the first line to the last line of the eye chart will form a certain angle with the human eye. When the human eye gradually moves from the first row to the adjacent row, the human eye is tested from the state of looking up to looking down during the moving process, which makes the test status inconsistent, and there is a deviation in the test results, which makes the test results n...

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Abstract

The invention discloses a memorize-proof visual chart which includes a stationary box and a remote control. A monolithic integrated circuit microcontroller and a power device are arranged in the fixing box, the output end of the power device is provided with a moving lever, the moving lever is arranged perpendicularly to the fixing box, a display is vertically and fixedly connected to the end of the moving lever, the upper end of the display is provided with a camera, the camera is electrically connected with the microcontroller of the single chip microcomputer, the power device can set the display and the human head image at the same height through the single chip microcomputer microcontroller under the capturing of the human head image by the camera, the remote controller is controllableand sends a visual acuity value test signal individually, the display can realize the single display of the corresponding vision value test pattern by the single chip microcomputer microcontroller when the remote controller sends the vision value test signal. Thus, the random display of the visual acuity value test pattern is realized, and people are prevented from artificially interfering with and improving the personal visual acuity value test value by reciting and memorizing the visual acuity chart of the fixed structure, so as to improve the authenticity and accuracy of the visual acuityvalue test.

Description

technical field [0001] The invention belongs to the technical field of vision testing equipment, and relates to an eye chart, in particular to an anti-reciting eye chart. Background technique [0002] The current eye charts are all fixed designs, and the test patterns have a fixed arrangement structure. Therefore, in order to obtain good vision test results, some people cheat in the vision test by reciting the vision chart patterns, making the test results Not true and not good for eyesight protection. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide an anti-recitation eye chart capable of randomly displaying visual acuity test patterns, which can improve the authenticity and accuracy of the visual acuity test and is also beneficial to protect eyesight. [0004] The object of the present invention is achieved like this: a kind of anti-reciting eye chart, comprises fixed box, display, camer...

Claims

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Application Information

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IPC IPC(8): A61B3/032
CPCA61B3/0041A61B3/032
Inventor 高振亚于芳贾焕霞
Owner XUCHANG UNIV
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