Astigmatism is a common condition where the eye does not focus light evenly, leading to blurred or distorted vision. It can occur when the cornea (the clear front surface of the eye) is irregularly shaped, but it can also be caused by the natural lens inside the eye. In some cases, astigmatism develops or worsens with the growth of a cataract, as changes in the lens alter how light enters the eye.

Astigmatism can be corrected in several ways, depending on its cause and severity. Glasses or contact lenses often provide clear vision. For patients undergoing cataract surgery, specialized intraocular lenses can be selected to reduce or correct astigmatism at the time of surgery. These treatment options allow many people with astigmatism to achieve sharper, clearer vision.

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