Astigmatism occurs when the eye is shaped more like an oval than a sphere, causing blurry vision. Astigmatism affects about one in three Americans and it occurs more frequently as you age. The ...

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Astigmatism occurs when the cornea, the clear outer surface of the eye, is not perfectly round. This irregular shape causes light rays to bend unevenly, resulting in blurry or distorted vision at all ...

Gazing at your Christmas tree could help diagnose a common vision problem. If the lights look more like streaks or beams than distinct spots, this could indicate astigmatism, which is extremely common ...