Eyes & Vision: Causes & Risks

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  • Farsightedness (Hyperopia) - What Happens

    11/23/07, Healthwise

    Farsightedness (hyperopia) most commonly starts in early childhood, but normal development and lengthening of the eyeball during early childhood corrects the condition. If the child is still slightly farsighted when the eye has finished g

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  • Age-Related Macular Degeneration - Cause

    08/13/07, Healthwise

    Vision loss from age-related macular degeneration (AMD) is caused by damage to the light-detecting nerve cells in the macula. The cause of this damage to the nerve cells is unknown.

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  • Diabetic Retinopathy - Cause

    04/13/07, Healthwise

    Diabetes damages small blood vessels throughout the body, leading to reduced blood flow. When these changes affect the tiny blood vessels in the eyes, diabetic retinopathy may develop.

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  • Diabetic Retinopathy - What Increases Your Risk

    04/13/07, Healthwise

    Your risk of developing diabetic retinopathy depends largely on two factors: how long you have had diabetes and whether or not you have kept good control of your blood sugar.

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  • Nearsightedness (Myopia) - Cause

    07/07/07, Healthwise

    Most nearsightedness (myopia) is caused by a natural change in the shape of the eyeball that makes it egg-shaped rather than round. This causes light to focus in front of the retina rather than directly on the retina. Nearsightedn

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  • Nearsightedness (Myopia) - What Increases Your Risk

    07/07/07, Healthwise

    Asians and people who have a family history of nearsightedness are at increased risk for nearsightedness. Women have a greater risk for high myopia, or severe nearsightedness, than men do.

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  • Farsightedness (Hyperopia) - Cause

    11/23/07, Healthwise

    Farsightedness (hyperopia) occurs when light entering the eye through the lens is focused behind the retina instead of directly on it (refractive error). This is caused by an eye that is too short, whose cornea is not curved enough, or wh

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