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  2. Macular degeneration - Wikipedia

    en.wikipedia.org/wiki/Macular_degeneration

    In the AREDS-2 formulation, lutein (10 mg) and zeaxanthin (2 mg) replaced beta-carotene due to the risk of lung cancer in smokers taking beta-carotene. [2] There is some evidence to indicate that people with bilateral early or intermediate AMD, or intermediate AMD in one eye and advanced AMD in the other eye may benefit from vitamin and mineral ...

  3. Human eye - Wikipedia

    en.wikipedia.org/wiki/Human_eye

    One is the use of eye make-up. Another reason could be that the women in the reported studies have done more VDU work than the men, including lower grade work. A third often-quoted explanation is related to the age-dependent decrease of tear secretion, particularly among women after 40 years of age. [85] [87] [88]

  4. Myopia - Wikipedia

    en.wikipedia.org/wiki/Myopia

    A study of Jordanian adults aged 17 to 40 found over half (54%) were myopic. [ 139 ] A study indicated that the prevalence of myopia among urban children in India of aged 5 to 15 increased from 4.44% in 1999 to 21.15% in 2019.

  5. 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 ...

  6. LogMAR chart - Wikipedia

    en.wikipedia.org/wiki/LogMAR_chart

    The chart was designed by Ian Bailey [5] and Jan E. Lovie-Kitchin at the National Vision Research Institute of Australia. [1] [3] They described their motivation for designing the LogMAR chart as follows: "We have designed a series of near vision charts in which the typeface, size progression, size range, number of words per row and spacings were chosen in an endeavour to achieve a ...

  7. Blind spot (vision) - Wikipedia

    en.wikipedia.org/wiki/Blind_spot_(vision)

    Distribution of rods and cones along a line passing through the fovea and the blind spot of a human eye [1]. A blind spot, scotoma, is an obscuration of the visual field.A particular blind spot known as the physiological blind spot, "blind point", or punctum caecum in medical literature, is the place in the visual field that corresponds to the lack of light-detecting photoreceptor cells on the ...

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