Cataracts

    • What is a Cataract?
    • A Cataract is a cloudy area in the lens of the eye. A normal lens is clear. It focuses light on the back of the eye (retina). A cataract blocks some of the light making the vision blurred.

      this is a cataract
       

     
      Signs of Cataracts
    Cloudy, fuzzy, foggy or filmy vision
    Changes in the way you see colors
    Problems driving at night because headlights seem too bright
    Problems with glare from lamps or the sun
    Frequent changes in your eye prescription
    Double vision
    Apparent improvement in near vision
     
    • How are Cataracts Diagnosed?
    • A regular eye exam is all that is needed to find a cataract. Your vision will be checked and you probably will get eye drops to dilate (enlarge) the pupils. This helps us to see the inside of your eyes. Instruments such as the ophthalmoscope and Slit Lamp are used to detect cataracts and other eye diseases.

    • How are Cataracts Treated?
    • Sometimes a change in glasses is all that is needed. But that is usually temporary. As a cataract increases and vision becomes dim, surgery may be necessary. This involves removing all or part of the lens and replacing it with an artificial lens.

      animation: cataract; removed; iol in place
      Animation showing cataract, removed and implant in place

    • Can a Cataract Return?
    • No, because most or all of the lens has been removed. However, in some people the lens capsule becomes cloudy. This condition is treated with a laser.



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    updated Nov 26, 1998 copyright © 1997 1998 Arnold Eye Center