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Eyesight depends on a complex series of interactions between the different parts of the eye

Updated: Monday, Jun 14,2010, 6:26:39 PM
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Eyesight depends on a complex series of interactions between the different parts of the eye. Many things can cause low vision and each one affects sight in a different way. Low vision affects some people as they age. Other causes are things such as macular degeneration, diabetic retinopathy, cataracts and glaucoma.

that contrast is important if you have low vision. Simple changes also may help:

    * write with bold, black felt-tip markers
    * use paper with bold lines to help you write in a straight line
    * put colored tape on the edge of your steps to help you avoid a fall
    * install dark-colored light switches and electrical outlets that you can see easily against light colored walls
    * use motion lights that turn on by themselves when you enter a room - these may help you avoid accidents caused by poor lighting
    * use telephones, clocks and watches with large numbers and put large-print labels on the microwave and stove

low vision means you cannot fix your eyesight with glasses, contact lenses, medicine or surgery. It can get in the way of your normal daily routine. NIA offers these symptoms that may indicate you have low vision:

    * have trouble seeing well enough to do everyday tasks like reading, cooking or sewing
    * can't recognize the faces of friends or family
    * have trouble reading street signs
    * find that lights don't seem as bright as usual

If you have any of these problems, ask your eye care professional to test you for low vision. There are many things that can help. Aids can help you read, write and manage daily living tasks. Lighting can be adjusted to your needs. You also can try prescription reading glasses, large-print reading materials, magnifying aids, closed-circuit televisions, audio tapes, electronic reading machines and computers that use large print and speech.

Although low vision cannot be corrected, changes can make it easier to function.

Tags: vision Low

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