Astigmatism is a natural and commonly occurring cause of blurred or distorted vision that is usually associated with an imperfectly shaped cornea. It is a common eye condition that's usually corrected by eyeglasses, contact lenses, or surgery. Astigmatism is caused by an eye that is not completely round and occurs in nearly everybody to some degree.
Astigmatism is usually associated with an imperfectly shaped cornea. The exact cause in not known. People with undetected astigmatism often have blurred vision which can be associated with fatigue and eyestrain. Astigmatism may occur with other vision problems such as near sightedness and farsightedness. The possible treatments for Astigmatism are glasses, contact lenses, and even vision correction procedures.
Almost all degrees of “normal” astigmatism can be corrected with properly prescribed eyeglasses or contact lenses. For a person with only a slight degree of astigmatism, corrective lenses may not be needed at all, as long as other conditions, such as near sightedness or farsightedness, are not present. If the astigmatism is moderate to high, however, corrective glasses or contact lenses are probably needed. The estimated prevalences of astigmatism, in the population were 53.5%. No significant gender difference was found in the prevalence of any refractive errors. The mean astigmatism and the prevalence increased with increasing age.