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Noninvasive assessment of the visual function: an introduction

M A Johnson, R A Applegate

    Applied Optics
    |May 11, 2010
    PubMed

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    Visual System01:26

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    Light enters the eye through the cornea, a transparent, dome-shaped surface covering the surface of the eyeball that helps to direct and focus incoming light. This light is then channeled toward the pupil, an adjustable opening whose size is controlled by the iris. The iris, a pigmented muscle, regulates the amount of light entering the eye by contracting or dilating the pupil, thereby ensuring optimal light levels for clear vision.
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