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Astigmatism Astigmatism is a vision condition that causes blurred vision due mainly to the irregular shape of the cornea, the clear front surface of the eye. An irregular shaped cornea prevents light from focusing properly at the back of the eye. This can result in blurred vision at any distance. Small amounts of astigmatism usually don't affect vision and don't require treatment. In fact, most people have some astigmatism. But if your child complains about distorted or blurred vision, eye discomfort, and headaches after reading, the reason could be a more significant degree of astigmatism that needs correction. It is common for a child with astigmatism also to be either nearsighted or farsighted, since all three vision conditions are caused by a defect in how the eyes bend or "refract" light, called a "refractive error". However, researchers have not been able to identify the specific cause of astigmatism. In most cases it is hereditary and present from birth. As a child grows, the degree of astigmatism can change and may either decrease or worsen over time. Astigmatism is usually treated with prescription lenses. For older children, contact lenses may offer better vision in some cases. |
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