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  2. Vernier acuity - Wikipedia

    en.wikipedia.org/wiki/Vernier_acuity

    A subject's vernier (IPA: / ˈ v ɜːr n ɪər /) acuity is the smallest visible offset between the stimuli that can be detected. Because the disalignments are often much smaller than the diameter and spacing of retinal receptors, vernier acuity requires neural processing and "pooling" to detect it. Because vernier acuity exceeds acuity by far ...

  3. Vernier scale - Wikipedia

    en.wikipedia.org/wiki/Vernier_scale

    Vernier caliper scales; main at top, vernier at bottom. It reads 3.58 ± 0.02 mm by adding 3.00 mm (left red mark) on the fixed main scale to vernier 0.58 mm (right red mark). The main scale reading is that to the left of the zero on the vernier scale. The vernier reading is found by locating the best aligned lines between the two scales.

  4. Hyperacuity - Wikipedia

    en.wikipedia.org/wiki/Hyperacuity

    Ewald Hering's model, published 1899, of how a Vernier acuity stimulus is coded by a receptor array. Receptors marked c signal a different position code along the horizontal direction from either the position a code or the position b code. [1] The sharpness of our senses is defined by the finest detail we can discriminate.

  5. Visual acuity - Wikipedia

    en.wikipedia.org/wiki/Visual_acuity

    Supporting this idea, vernier acuity seems to correspond very closely (and may have the same underlying mechanism) enabling one to discern very slight differences in the orientations of two lines, where orientation is known to be processed in the visual cortex.

  6. Preferential hyperacuity perimetry - Wikipedia

    en.wikipedia.org/wiki/Preferential_hyperacuity...

    PHP takes advantage of visual hyperacuity, also known as vernier acuity—the ability to identify the misalignment of visual objects. Visual hyperacuity is at least 10 times more sensitive than visual acuity, the ability to separate between distinct objects. [4]

  7. List of optometric abbreviations - Wikipedia

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

    See Visual_acuity#Legal_definitions: VA Nsc - VA Ncc Visual acuity with Near chart without correctors 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

  8. Trump recalls his infamous mental acuity test as he ... - AOL

    www.aol.com/trump-recalls-infamous-mental-acuity...

    After Mr Trump took the mental acuity test, he explained the cognitive evaluation to Fox News in 2020. He said that he asked a doctor whether there was “some kind of cognitive test I can take ...

  9. Category:Medical scales - Wikipedia

    en.wikipedia.org/wiki/Category:Medical_scales

    Medical scales are scales used to describe or assess medical conditions. Subcategories. This category has the following 3 subcategories, out of 3 total. ...