Friday, October 14, 2011

Role of Contact Lenses in Correcting Astigmatism

One of the common problems seen in many people in astigmatism is nothing but a condition of a refractive error of the eye. In general, the light entering your eye refracts or bends and points back to the surface of the eye that enables the vision. However, with the refractive error or astigmatism, the vision gets disturbed. Blurred vision is the result of this condition.

Many causes such as change in the length of the eye, shape of the lens or the cornea and so on are responsible for distortion of light being focused on the eye. As the image is not clearly focused on the retina, the image is blurred. Though eyeglasses are considered to be used for correcting astigmatism, contact lenses are found to be more ideal and perfect solutions.

As the problem is seen with change in the normal spherical contact lens, the invention of aspherical lens are perfect for treating astigmatism. Special lenses called toric lenses are considered to cure this problem. These toric lenses are considered to provide power to the natural lens and also bend the light rays at an angle in order to correct the blurred vision. A thick portion of these lenses are meant to enable the lens in position to assure correct refraction. These lenses are the prescription contact lenses which are even available in colored models. These colored contacts which are meant to correct astigmatism are only obtained after prescription by a professional. However, they are quite different from the non-prescription colored contacts. Toric lenses are not meant to enhance the personal appearance of the individual but are considered to treat astigmatism. Contact lenses are easily adaptable and ensure comfort in the vision. They even enable a good look and avoid the problem of wearing eyeglasses.

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