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. Astigmatism correction can usually be easily incorporated into eye glasses. Alternatively, special soft contact lenses called toric lenses can be prescribed. Refractive surgeries require healthy eyes that are free from retinal problems, corneal scars, and any eye disease. The Extrapolated Prevalence of Astigmatism in Sweden is 1,232,680 .Prevalance Rate for Astigmatism is approx 1 in 4 or 15.54% or 40 million people.