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  2. Eye color - Wikipedia

    en.wikipedia.org/wiki/Eye_color

    Eye color. Eye color is a polygenic phenotypic trait determined by two factors: the pigmentation of the eye 's iris [ 1][ 2] and the frequency-dependence of the scattering of light by the turbid medium in the stroma of the iris. [ 3]: 9. In humans, the pigmentation of the iris varies from light brown to black, depending on the concentration of ...

  3. Infant visual development - Wikipedia

    en.wikipedia.org/wiki/Infant_visual_development

    Infant vision concerns the development of visual ability in human infants from birth through the first years of life. The aspects of human vision which develop following birth include visual acuity, tracking, color perception, depth perception, and object recognition . Unlike many other sensory systems, the human visual system – components ...

  4. Conjunctivitis - Wikipedia

    en.wikipedia.org/wiki/Conjunctivitis

    Conjunctivitis. Conjunctivitis, also known as pink eye, [ 4] is inflammation of the outermost layer of the white part of the eye and the inner surface of the eyelid. [ 5] It makes the eye appear pink or reddish. [ 1] Pain, burning, scratchiness, or itchiness may occur. [ 1] The affected eye may have increased tears or be "stuck shut" in the ...

  5. Iris (anatomy) - Wikipedia

    en.wikipedia.org/wiki/Iris_(anatomy)

    The iris (brown coloured portion of the eye) controls the size of the pupil by contracting the sphincter pupillae and dilator pupillae muscles. The sphincter pupillae is the opposing muscle of the dilator pupillae. The pupil's diameter, and thus the inner border of the iris, changes size when constricting or dilating.

  6. Sports and activities that improve hand-eye ... - AOL

    www.aol.com/sports-activities-improve-hand-eye...

    When you’re not up to getting too physical, there are other ways to give your hand-eye coordination a boost. Here are some options: Bouncing a ball. Playing catch. Playing video games. Learning ...

  7. Doing quick, easy exercises at night — even while ... - AOL

    www.aol.com/lifestyle/doing-quick-easy-exercises...

    A new study finds that doing some light activity in the evening, rather than just sitting, can help people sleep 30 minutes longer.

  8. Eye chart - Wikipedia

    en.wikipedia.org/wiki/Eye_chart

    Landolt C. Lea test. logMAR chart. An eye chart is a chart used to measure visual acuity comprising lines of optotypes in ranges of sizes. Optotypes are the letters or symbols shown on an eye chart. [ 1] Eye charts are often used by health care professionals, such as optometrists, physicians and nurses, to screen persons for vision impairment.

  9. Ophthalmology - Wikipedia

    en.wikipedia.org/wiki/Ophthalmology

    Ophthalmology ( / ˌɒfθælˈmɒlədʒi /, OFF-thal-MOL-ə-jee) [ 1] is a clinical and surgical specialty within medicine that deals with the diagnosis and treatment of eye disorders. [ 2] A former term is oculism . An ophthalmologist is a physician who undergoes subspecialty training in medical and surgical eye care. [ 3]

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