Astigmatism is an optical condition that affects the vision of millions of people worldwide. It occurs when the shape of the eye is not perfectly round and the cornea is not evenly curved, resulting in blurred vision. Astigmatism is a common eye disorder, but it can be corrected with glasses, contact lenses, or surgery.
Astigmatism occurs when the front surface of the eye, the cornea, is curved more steeply in one direction than the other. This causes light to be focused differently in different directions, resulting in blurred vision. Astigmatism can also cause double vision when looking at an object from the side.
The cause of astigmatism is not well understood, but it is believed to be inherited or caused by trauma to the eye. Astigmatism can also occur as a result of certain eye surgeries, such as LASIK.
Astigmatism can be diagnosed by an eye care professional during a comprehensive eye exam. During the exam, the doctor will measure the curvature of the cornea and use a special device called a refractometer to measure the amount of astigmatism.
The most common treatment for astigmatism is corrective lenses. These lenses are made to correct the curvature of the cornea and help improve vision. In some cases, contact lenses may be a better option than glasses. Surgery may also be an option to correct astigmatism.
Astigmatism is a common eye disorder that affects millions of people worldwide. It can be corrected with glasses, contact lenses, or surgery. Early diagnosis and treatment can help improve vision and reduce the risk of complications.
American Academy of Ophthalmology. (2020). Astigmatism. Retrieved from https://www.aao.org/eye-health/diseases/astigmatism
Bhavsar, A. R., & Bhavsar, A. (2016). Astigmatism: Causes, Symptoms, and Treatment. In Primary Care: Clinics in Office Practice (Vol. 43, pp. 487-492). Elsevier. https://doi.org/10.1016/j.pop.2016.03.003
National Institutes of Health. (n.d.). Astigmatism. Retrieved from https://www.nei.nih.gov/learn-about-eye-health/eye-conditions-and-diseases/astigmatism