Astigmatism is a common eye condition that affects the shape of the cornea, or the clear layer at the front of the eye. It occurs when the cornea is slightly curved or its surface is uneven. This can cause blurred, distorted or double vision, as well as eye strain, headaches, and difficulty with night vision.
Astigmatism can be caused by genetics, an injury to the eye, or a degenerative eye condition. It can also be caused by the shape of the eye itself, or the shape of the lens, which can be altered due to age, certain medications, or even wearing contact lenses for an extended period of time.
Astigmatism can be a source of great discomfort for people who suffer from it. Blurry vision can make it difficult to read, drive, or watch television. Eye strain can cause headaches, and difficulty with night vision can make it hard to see in low-light conditions. Some people with astigmatism may also experience eye fatigue or eyestrain, which can lead to dry eyes, itching, redness, or a feeling of grittiness in the eyes.
Fortunately, astigmatism is a very treatable condition. A detailed eye exam can diagnose astigmatism, and an eye doctor can recommend the best course of treatment. This may include corrective lenses such as glasses or contact lenses, or refractive surgery such as LASIK. Treatment can help reduce the symptoms and improve vision, allowing people to enjoy life without the bother of astigmatism.