{"id":777,"date":"2019-08-25T12:49:45","date_gmt":"2019-08-25T04:49:45","guid":{"rendered":"http:\/\/mataasia.com\/blog\/?p=777"},"modified":"2019-08-26T15:08:57","modified_gmt":"2019-08-26T07:08:57","slug":"functions-of-the-eye","status":"publish","type":"post","link":"https:\/\/mataasia.com\/blog\/2019\/08\/25\/functions-of-the-eye\/","title":{"rendered":"Functions Of The Eye"},"content":{"rendered":"
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FUNCTIONS OF THE EYE<\/h1>\n<\/div>\n
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What\u2019s the most complex organ in the body? Some say it\u2019s the human eye. Made of many working parts, the human eye functions much like a digital camera. Here\u2019s how it works.<\/p>\n

    \n
  1. Light enters the eye through the\u00a0cornea<\/b>, the clear front surface of the eye, which acts like a camera lens.<\/li>\n
  2. The iris works much like the diaphragm of a camera–controlling how much light reaches the back of the eye. It does this by automatically adjusting the size of the pupil which, in this scenario, functions like a camera’s aperture.<\/li>\n
  3. The eye\u2019s crystalline lens sits just behind the pupil and acts like autofocus camera lens, focusing on close and approaching objects.<\/li>\n
  4. Focused by the cornea and the crystalline lens, the light makes its way to the retina. This is the light-sensitive lining in the back of the eye. Think of the retina as the electronic image sensor of a digital camera. Its job is to convert images into electronic signals and send them to the optic nerve.<\/li>\n
  5. The optic nerve then transmits these signals to the visual cortex of the brain which creates our sense of sight.<\/li>\n<\/ol>\n

    Perception,\u00a0<\/b>Color, and Image<\/b><\/h3>\n

    The eye\u2019s retina contains millions of tiny light-sensing nerve cells called\u00a0rods<\/b>\u00a0and\u00a0cones<\/b>, which are named for their unique shapes.<\/p>\n

    \n
    \n

    \"Eye\u2019s<\/p>\n<\/div>\n<\/div>\n

      \n
    • Cones<\/b>\u00a0are responsible for perceiving color and detail.<\/li>\n
    • Rods<\/b>\u00a0are responsible for night vision, peripheral or side vision, and detecting motion.<\/li>\n<\/ul>\n

      Rods and cones convert the light from our retinas into electrical impulses, which are sent by the\u00a0optic nerve<\/b>\u00a0to the\u00a0brain<\/b>, where an image is produced. The macula is the part of the retina that gives us central vision. It\u2019s how we see form, color, and detail in our direct line of sight.<\/p>\n

      \n
      \n

      \"Tears\"<\/p>\n<\/div>\n<\/div>\n

      <\/div>\n
      <\/div>\n

      Tears<\/h3>\n

      Another function of the eye is to produce tears. Tears are important in maintaining healthy eyes. Tears nourish and lubricate the surface of the eye as well as wash away debris. A normal tear consists of water, oil, and mucus.<\/p>\n

      There are three main parts in the tear system:<\/p>\n

        \n
      1. Glands that make the tear fluid, oil, and mucus<\/li>\n
      2. Openings that let tears flow out of the eye<\/li>\n
      3. Ducts inside the nose that tears drain through<\/li>\n<\/ol>\n

        We make fewer tears as we age and that can lead to a condition called dry eye. Dry eye may be\u00a0triggered by hormonal changes in the body and is common among women during pregnancy and menopause. If you believe you have dry eye, it may be time to speak with your eye doctor. Schedule an appointment today.<\/p>\n<\/div>\n<\/div>\n

         <\/p>\n

        <\/div>\n","protected":false},"excerpt":{"rendered":"

        FUNCTIONS OF THE EYE What\u2019s the most complex organ in the body? Some say it\u2019s the human eye. Made of many working parts, the human eye functions much like a digital camera. Here\u2019s how it works. Light enters the eye through the\u00a0cornea, the clear front surface of the eye, which acts like a camera lens. 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