Astigmatism Contact Lenses

Astigmatism Contact Lenses

Astigmatism is an optical defect in which vision is blurred because of the inability of the eye's optics to focus a point into a sharp focused image on the retina. There are two types of astigmatism, regular and irregular. Irregular astigmatism is often caused by a corneal scar or scattering in the crystalline lens and cannot be corrected by standard spectacle lenses. Irregular astigmatism of the cornea can be corrected by contact lenses. Regular astigmatism arising from either the cornea or crystalline lens can be corrected by a toric lens. A toric surface resembles the surface of a foot ball or a doughnut where there are two regular radii, one smaller than another. This optical shape gives rise to regular astigmatism in the eye.

Astigmatism Contact Lenses are the preferred method of correcting astigmatism in U.S. adults. This includes hard contact lenses and soft contact lenses that have a compensating optical cylindrical lens. Astigmatism can also be corrected with eyeglasses or refractive surgery. Various considerations involving ocular health, refractive status, and lifestyle usually determine whether which option may be best for an individual. Please consult your eye-care professional for more information on Astigmatism Contact Lenses and other available options.

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