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  2. Visual acuity - Wikipedia

    en.wikipedia.org/wiki/Visual_acuity

    A reference value above which visual acuity is considered normal is called 6/6 vision, the USC equivalent of which is 20/20 vision: At 6 metres or 20 feet, a human eye with that performance is able to separate contours that are approximately 1.75 mm apart. [9] Vision of 6/12 corresponds to lower performance, while vision of 6/3 to better ...

  3. Snellen chart - Wikipedia

    en.wikipedia.org/wiki/Snellen_chart

    The largest letter on an eye chart often represents an acuity of 6/60 (20/200), the value that is considered "legally blind" in the US. Many individuals with high myopia cannot read the large E without glasses, but can read the 6/6 (20/20) line or 6/4.5 (20/15) line with glasses. By contrast, legally blind individuals have a visual acuity of 6/ ...

  4. List of optometric abbreviations - Wikipedia

    en.wikipedia.org/wiki/List_of_optometric...

    Binocular single vision: BV: Binocular vision: BVD: Back vertex distance BVP: Back vertex power CD: Centration distance C/D: Cup–disc ratio CF: Count fingers vision – state distance c/o or c.o. Complains of CT: Cover test c/u: Check up CW: Close work Δ: Prism dioptre D: Dioptres DC: Dioptres cylinder DNA: Did not attend DOB: Date of birth ...

  5. A new surgery can give legally blind people 20/20 vision - AOL

    www.aol.com/news/2016-12-15-a-new-surgery-can...

    Within a few months, almost all patients went from having an average of 20/1290 vision to 20/20 vision! Even more amazing, the amount of time between the trauma and the treatment didn't seem to ...

  6. Even With 20/20 Vision, I Wear These Glasses Every Day - AOL

    www.aol.com/lifestyle/even-20-20-vision-wear...

    Even With 20/20 Vision, I Wear These Glasses Every Day. Trishna Rikhy. June 21, 2023 at 8:00 AM. ... Even if I had prescription glasses, I’d definitely still get a pair of Caddis frames with a ...

  7. Eye examination - Wikipedia

    en.wikipedia.org/wiki/Eye_examination

    The standard definition of normal visual acuity (20/20 or 6/6 vision) is the ability to resolve a spatial pattern separated by a visual angle of one minute of arc. The terms 20/20 and 6/6 are derived from standardized sized objects that can be seen by a "person of normal vision" at the specified distance.

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