An eye ailment resulting in blurred vision is called astigmatism. It is a result of asymmetry between the shape of the cornea and the lens of the eye. The cornea should be round but instead it’s shaped like a football resulting to blurred vision. Astigmatism is the difference in curvature in the different medians in the parts of the eye.
Using myopia and hyperopia, there are five types of astigmatism. Simple myopic astigmatism is where one meridian is nearsighted while the other is free of any ailments. Compound myopic astigmatism is where both meridians are myopic yet one meridian has much graver symptoms of nearsightedness. Simple hyperopic astigmatism is wherein one meridian is farsighted while the other is free of any ailments. The other called hyperopic astigmatism means that both meridians are farsighted with one having a graver condition. Mixed astigmatism deals with both meridians having opposite effects, one is myopic, the other hyperopic. Astigmatism can be easily treated with contact lenses. They lens that is referred to treat astigmatism are called “Toric” contacts. They are made from same material as regular contact lenses; so they can be either soft or regular gas permeable. Toric lenses have two powers in them; one is for treatment of astigmatism, the other for either myopia or hyperopia. It also takes into consideration the blinks and eye movements of the user.
It is important to have a eye examination with an eye practitioner to check if you are fit to wear toric lenses. The doctor for the patient’s astigmatic concerns may employ a high-powered spherical soft lens. This fitting process deals with trial and error for both patient and doctor.
Astigmatism contact lens is available in the market, and manufactured by leading companies. Consult your eye practitioner so he or she can recommend a brand with the best characteristics and suitable for your pair of eyes. Toric contact lenses are available in different forms, like frequent replacements, and disposables, extended and daily wear.
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