Remotely-controlled self-testing eye chart

Abstract

The present invention relates to a remote control self-testing eyesight meter, which belongs to a product in the medical appliance manufacturing technology field. The eyesight meter consists of a display, convertible characters, a remote controller and a direction button. There is a character window on the eyesight meter display, the direction button on the remote controller is inserted in the remote controller, and the eyesight meter display is connected with the remote controller via a 'Bluetooth' wireless system. During use, the power is switched on, and the testee manually holds the remote controller. When the testing characters are on, the testee shall make accurate direction selection in the required time, and the display widow will show smaller characters. When the character direction cannot be selected accurately, the buzzer gives an alarm and smaller testing characters will not be provided any longer. The eyesight meter has such advantages as reasonable design, simple structure and convenient use etc.

Description

technical field [0001] The invention relates to a remote-controlled 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 invention provides a remote control self-test eye chart with reasonable design, simple structure, reliable use, random character change and single-use. [000...

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 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

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