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Vision testing device

  • US 10,667,681 B2
  • Filed: 05/12/2016
  • Issued: 06/02/2020
  • Est. Priority Date: 06/05/2015
  • Status: Active Grant
First Claim
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1. A vision testing device comprising:

  • a housing configured to be mounted on a head of a testee, the housing including an internal space;

    a set of display devices configured to display a test image for the testee to view within the internal space;

    a camera installed on the housing, the camera being configured photograph an external image in a line of sight of the testee;

    a processor configured to switch display images displayed on the set of display devices between the test image for a vision test and the external image photographed by the camera during the vision test; and

    a switch configured to send an instruction signal to the processor to switch the display images.

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