| I Have Astigmatism |
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The cornea (front of the eye) is not perfectly round, but has more of a curved shape. |
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Objects may appear to have a shadow or ghosted image without glasses and/or contact lenses. |
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Your distance vision and near vision are probably both affected. |
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It is common to have a combination of astigmatism and nearsightedness or farsightedness. |
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If you wear soft contact lenses, the prescription probably has several numbers listed for the power. Example: -4.50 -1.25 x 180 soft contact lens power. If you wear gas permeable contact lenses, you probably have astigmatism. |
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Astigmatism occurs because the curved shape of the cornea (front of the eye) causes images to be bent as they pass through. This causes two focal points near the retina (but not focused on the retina), leading to distortion and ghosting. |
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Refractive eye surgery will correct the focus of your eye, which should enable you to see well at both distance and near following your surgery. |
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As you age, the lens inside your eye will lose its ability to focus as well at near – this usually becomes evident around the age of 40. This is when many people begin using reading glasses or bifocals. Refractive eye surgery will not prevent this age-related event, known as presbyopia, from occurring. You will eventually need reading glasses to see well at near. |