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  1. Eye Chart and Vision Test Online Calculate your visual acuity to see if it's 20/20, 20/30, 20/40, etc. Check your screen display: the top letter E (in the eye chart, below) should be almost 3 1/2 inches (88.7 millimeters) tall.

  2. Assess binocular and monocular visual acuity. This calculator is intended as a convenient screener for visual acuity to be used on a mobile device and should not be used as a replacement for in-office testing.

  3. Test your visual acuity or clarity of vision with Snellen chart directly in your browser. Press on the play button and stay 10 feet (3 meters) away from the screen. Repeat the test once for each eye; for each level, you need to have at least 50% percent correct answers.

  4. Try our eye health test online for free on your optometrist's website OPTOPLUS. Quick and accurate, learn more about vision problems now.

  5. Get your free online vision test today! This visual acuity test is a digital tool that gives you a quick reading on your current vision.

  6. 28 sty 2012 · Test your Eyesight Online. You should start with University at Buffalo’s IVAC tool. Use a physical ruler to measure the length of the line on the screen (the length will vary depending on your screen resolution). Also measure the distance of your eyes from the computer screen.

  7. Measure your distance vision, from home, using an AI-based vision test developed at Stanford University.

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