Astigmatism is an eye condition that causes blurred vision due to an irregularly shaped cornea. It can range from mild to severe. A person with 25 diopters of astigmatism is considered to have severe astigmatism.
What Causes Astigmatism?
Astigmatism is typically caused by an irregularly shaped cornea or lens, which prevents light from entering the eye properly. This causes blurred vision at all distances. Astigmatism can also be caused by certain eye diseases, such as keratoconus.
Signs and Symptoms of Astigmatism
The most common symptom of astigmatism is blurred vision at all distances. Other signs and symptoms of astigmatism may include headaches, eyestrain, squinting, or difficulty driving at night.
Diagnosis of Astigmatism
Astigmatism is usually diagnosed during a comprehensive eye exam. The doctor will use a machine called a keratometer to measure the curvature of the cornea. This will help them determine the amount of astigmatism present.
Treatment of Astigmatism
Treatment for astigmatism depends on the severity of the condition. Mild astigmatism can often be corrected with eyeglasses or contact lenses. For more severe astigmatism, surgery may be necessary to correct the shape of the cornea.
Conclusion
Astigmatism is a common eye condition that causes blurred vision at all distances. It can range from mild to severe, and those with 25 diopters of astigmatism are considered to have severe astigmatism. Diagnosis and treatment of astigmatism depends on the severity of the condition, but may require eyeglasses, contact lenses, or surgery.