Understanding the overview of cataracts- the clouded lenses (1) - PowerPoint PPT Presentation

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Understanding the overview of cataracts- the clouded lenses (1)

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A cataract is a clouding of the lens in the eye that affects vision. For people who have cataracts, seeing through cloudy lenses is a bit like looking through a frosty or fogged-up window. – PowerPoint PPT presentation

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Title: Understanding the overview of cataracts- the clouded lenses (1)


1
Cataracts
2
Cataracts
  • A cataract is a clouding of the lens in the eye
    that affects vision. For people who have
    cataracts, seeing through cloudy lenses is a bit
    like looking through a frosty or fogged-up
    window. Clouded vision caused by cataracts can
    make it more difficult to read, drive a car,
    especially at night. Most cataracts develop
    slowly and dont disturb your eyesight early on.
    It is commonly seen in older people because
    cataracts will eventually interfere with the
    vision overtime.

3
Causes of cataracts- the cloud lenses
  • Mostly, cataracts develop when aging or injury
    changes the tissue that makes up your eyes lens.
    Some cataracts are because of inherited genetic
    disorders that may lead to other health
    conditions and increase your risk of cataracts.
    Cataracts may also be result of various eye
    conditions, medical conditions like diabetes,
    trauma or previous eye surgery. Long term use of
    steroid medications may also contribute to
    cataracts.

4
Diagnoses of cataracts- the cloud lenses
  • Cataract is diagnosed through a comprehensive
    eye examination that includes 
  • Visual acuity test This eye chart test measures
    how well you see at various distances.
  • Dilated eye exam Drops are placed in your eyes
    to widen the pupils. Your ophthalmologist uses a
    magnifying lens to examine your retina and optic
    nerve for signs of damage and other eye problems.
  • Tonometry Numbing drops may be applied to your
    eye to check the pressure inside the eye.

5
Symptoms
  • Signs and symptoms of cataracts include the
    following 
  • Clouded, blurred or dim vision
  • Increasing difficulty with vision at night
  • Sensitivity to light and glare
  • Regular changes in eyeglass or contact lens
    prescription
  • Fading or yellowing of colours
  • Double vision in a single eye
  • Initially, the cloudiness in your vision caused
    by a cataract may affect only a small part of the
    eyes lens and you may not be aware of any vision
    loss. As the cataract develops more, it covers
    major portion of your lens and distorts the light
    passing through the lens.

6
Treatments
  • The symptoms of early cataract may be rectified
    with new eyeglasses, brighter lighting,
    anti-glare sunglasses, or magnifying lenses. If
    these measures fail to respond, surgery is the
    only option. It involves removing the cloudy lens
    and replacing it with an artificial lens.An eye
    specialist suggests surgery to treat
    cataract only when vision loss interferes with
    your everyday activities, such as driving,
    reading, or watching TV. You do not have to rush
    into surgery because delaying cataract surgery
    will not cause long-term damage to your eye or
    make the surgery more difficult. You and your eye
    specialist can make this decision
    together. Sometimes a cataract should be removed
    if it prevents examination or treatment of
    another eye problem, such as age-related macular
    degeneration or diabetic retinopathy. If your eye
    doctor finds a cataract, you may not need
    cataract surgery for several years.

7
Treatments
Continue
  • By having your vision tested regularly, you and
    your eye doctor can discuss if and when you might
    need treatment.
  • Ophthalmologists  think several strategies may
    be helpful to prevent cataracts or slow the
    progression of cataracts including
  • Regular eye examinations
  • Quit smoking
  • Reduce alcohol use
  • Wear sunglasses
  • Maintain a healthy weight
  • Choose a healthy diet that includes plenty
    of fruits and vegetables

8
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