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Self-testing eye chart with speech instruction

An eye chart and voice technology, applied in the direction of comprehensive refractometer, etc., can solve the problems of inconvenient use, inability to detect visual acuity with logarithmic eye chart, loss of seriousness of detection, etc.

Inactive Publication Date: 2006-12-27
陈宁宁
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When the ordinary logarithmic vision chart is used to test the examiner, the examiner and another person are required to assist. The examiner cannot use the logarithmic vision chart to test his own vision, which is inconvenient to use
And because the logarithmic eye ch

Method used

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  • Self-testing eye chart with speech instruction

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Embodiment

[0010] Embodiment: structure is as shown in accompanying drawing, is made up of eye chart display 1, character window 2, earphone 3, microphone 4, voice transmitting device, wherein, is provided with character window 2 on the eye chart display 1, and voice device is earphone 3, Microphone 4 and voice transmitter 5, earphone 3 and microphone 4 are connected with voice transmitter 5 by wire. The eye chart display 1 and the voice transmitter 5 are connected by a "Bluetooth" wireless system. The eye chart display 1 is composed of a housing and a display window. The display window is arranged with "E" or "C" detection characters that are reduced in logarithmic relationship. The characters are provided by the liquid crystal display and can change the opening direction randomly. The detection sequence is determined by It proceeds from large to small, and the characters being detected are displayed with high brightness. Each level of characters randomly changes direction every 5 secon...

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PUM

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Abstract

The invention relates to a voice self-test visual chart, belongs to manufacture technology field of medical appliance. The visual chart consists of display device, character window and voice apparatus, wherein the character window is provided on visual chart display, the voice apparatus includes earphone, mike and voice emitter. Earphone and mike are linked with voice emitter with wire, visual chart display is connected with voice emitter by 'Bluetooth' wireless system. When the chart is used, power will be turned on, and the detecting people wear earphone and mike. When testing character is light, correct direction selection should be made using 'up-down-right-left' voice in desired time limit. When selection is correct, voice of 'correct judgment, go on testing' will be sent out from the earphone, and higher level test will be carried out continuously. When selection is wrong, voice of 'false judgment, go on trying' will be send out from the earphone, the test will stop in this level and continues, no longer upgrades to higher level. The voice self-test visual chart of this invention has following advantages: professional design, simple structure, and convenient for use, etc.

Description

technical field [0001] The invention relates to a voice-type self-test eye chart, which belongs to the technical field of medical equipment manufacturing. Background technique [0002] When the ordinary logarithmic vision chart is used to test the examiner, the examiner and another person are required to assist. The examiner himself cannot use the logarithmic vision chart to test his vision, which is inconvenient to use. And because the logarithmic eye chart is a printed matter, the direction of each symbol is fixed and cannot be changed randomly. Therefore, in order to pass the vision test, some people reverse the opening direction of the symbols in each row, and they can also get away with it and lose the test. seriousness. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the present invention provides a voice-type self-test eye chart that is reasonable in design, simple in structure, reliable in use, can change characters at random, and c...

Claims

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Application Information

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IPC IPC(8): A61B3/028
Inventor 陈宁宁许福运
Owner 陈宁宁
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