The curvature of the eye is important to perception and those with astigmatism have blurred vision because light rays do not concentrate properly on the retina.
Another cause of astigmatism is incorrect lens shape behind the cornea.
The two main types of astigmatism are lenticular astigmatism, which is due to faulty lens shape, and corneal astigmatism, which comes from an irregularly shaped cornea.
Corneal astigmatism is often noticeable at birth and it is suggested that parents with astigmatism are more likely to pass it on to their children. Premature babies and those with less bodyweight are also more likely to have astigmatism. Severe eye injuries that scratch the cornea or particular kinds of eye surgery can cause corneal astigmatism.
Another common reason is keratoconus, an ailment that causes thinning and shape changes in the cornea.
It is recommended for those who notice the early symptoms of astigmatism to visit an eye doctor. Symptoms include extreme squinting, distortion and blurriness in vision at a variety of distances, light sensitivity, excessive closing of the eyes and eyestrain.
Eye doctors can diagnose astigmatism using a variety of tools such as a visual acuity test. Regular eye tests are the best way to make sure your eyes are at their best.
When astigmatism is not severe, doctors often do not suggest any kind of treatment.
Treatments for more severe cases of astigmatism include laser eye surgery and certain types of contact lenses.
It is important to keep your eyes healthy in order to prevent astigmatism and various eye disorders from occurring or to reduce the rate of the condition worsening.
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