Astigmatism is a common eye condition that causes blurred vision due to an irregularly shaped cornea. A person with astigmatism will have eyes that look like they have been stretched out of shape, often in an oval or oblong fashion. This can cause vision distortions, such as ghosting or double vision, and can make it difficult to focus on objects at a distance or close up. Astigmatism can be corrected with glasses, contact lenses, or surgery.
Symptoms of Astigmatism
The most common symptom of astigmatism is blurred vision. This can occur at any distance and can be worse when viewing objects up close. People with astigmatism may also experience headaches, eyestrain, and difficulty seeing in dim light.
Causes of Astigmatism
Astigmatism is caused by an irregularly shaped cornea. The cornea is the clear outer layer of the eye, and when it is misshapen, it can cause light to be distorted as it enters the eye. This can cause blurred vision.
Diagnosing Astigmatism
Astigmatism can be diagnosed during a comprehensive eye exam. During the exam, the optometrist will use a series of tests to measure the shape and curvature of the cornea.
Treating Astigmatism
Astigmatism can be corrected with glasses, contact lenses, or surgery. Glasses or contacts are the most common treatment, as they help to correct the distorted light entering the eye and can help to improve vision. Surgery can also be used to reshape the cornea, providing a more permanent solution.