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  2. List of optometric abbreviations - Wikipedia

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

    Visual acuity with eye chart at Near 15.7 inches (400 mm) and without (sc: Latin sine correctore) correctors (spectacles); Ncc is with (cc: Latin cum correctore) correctors. See Visual_acuity#Legal_definitions: VA OS Left visual acuity VA OD Right visual acuity VDU Visual display unit VF Visual field VPS Variable prism stereoscope WD

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  4. Electrooculography - Wikipedia

    en.wikipedia.org/wiki/Electrooculography

    To measure eye movement, pairs of electrodes are typically placed either above and below the eye or to the left and right of the eye. If the eye moves from center position toward one of the two electrodes, this electrode "sees" the positive side of the retina and the opposite electrode "sees" the negative side of the retina.

  5. SEE International - Wikipedia

    en.wikipedia.org/wiki/SEE_International

    Established in the 1980s, SEE's Santa Barbara Vision Care (SBVC) provides free eye care at clinics held two or three days per week. Per day, each clinic serves 10–15 uninsured individuals, providing glasses, surgeries, eye exams, and treatments. In 2012, SBVC provided care to 1,247 patients; in 2017, it provided care to more than 2,500.

  6. Eye chart - Wikipedia

    en.wikipedia.org/wiki/Eye_chart

    An example of the Landolt C eye chart (also known as the Japanese eye chart.). Numerous types of eye charts exist and are used in various situations. For example, the Snellen chart is designed for use at 6 meters or 20 feet, and is thus appropriate for testing distance vision, while the ETDRS chart is designed for use at 4 meters. [16]

  7. Electroretinography - Wikipedia

    en.wikipedia.org/wiki/Electroretinography

    If a dim flash ERG is performed on a dark-adapted eye, the response is primarily from the rod system. Flash ERGs performed on a light adapted eye will reflect the activity of the cone system. Sufficiently bright flashes will elicit ERGs containing an a-wave (initial negative deflection) followed by a b-wave (positive deflection).

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