Refractive error: These are the names of different refractive errors. For clear vision, light must be focused by the eye onto the retina. Myopia, or nearsightedness, is when the eye focuses light in front of the retina. Hyperopia, or farsightedness, is when the eye focuses light behind the retina. Astigmatism is when light does not come to one focal point but is spread over a range.
Answered 8/21/2012
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Refractions: Hyperopia - eye focuses light too far behind the sharp spot. Commonly called farsighted myopia - eye focuses light too far in front of the sharp spot. Commonly called nearsighted. Astigmatism - eye focuses light in two spots, neither one on the sharp spot. Each eye can have hyperopia or myopia, with or without astigmatism.
Answered 9/30/2012
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Refractive types: Myopia = can see up close with glasses, distance blurry; hyperopia = distance better than near but both blurry; astigmatism = blurry at all distances whether patient is myopic or hyperopic additionally.
Answered 10/10/2012
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