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Astigmatism: Caused by an Irregular Shaped Cornea

If you are suffering from improper vision the chances are that you will approach an ophthalmologist before the conditions becomes worse. Naturally, the doctor would carry out a series of test and then diagnose and in some cases you may be having vision problem like the astigmatism. This means that astigmatic vision problem is seen or only revealed during a check up with your ophthalmologist. In most cases vision problems doesn’t mean only astigmatism as patients have been diagnosed for either myopia or hyperopia along with astigmatic vision problem. Hence, your doctor would prescribe glasses or lenses so as to give you better vision. Otherwise, you may go for refractive surgery so that you may avoid wearing glasses.

Astigmatic vision problem

If you have only astigmatic vision problem then you may have gone to your doctor only when you start seeing things in a blurred way in any direction. Your ophthalmologist would check up your cornea with torch light and ascertain the degree of damage to your eyesight due to this. Hence, you must first of all understand as to what is astigmatism before coming to any conclusion by yourself.

The exact causes of astigmatic or blurred vision are not quite known although doctors attribute it to hereditary problems and due to injuries in the eyes. However, it is true that both children and adult may have astigmatic vision problem. Again, the shape of the cornea greatly affects vision that may turn objects into astigmatic blurred image.

It is generally seen that the cornea is symmetrically round in shape and this means resembling something like a baseball. In medical terms this means that one meridian is curved more than the one perpendicular to it. However, in case of astigmatic vision the cornea remains irregular in shape.

You may also find astigmatic vision problem in persons whose lens shape inside their eyes doesn’t allow proper identification of objects. This is known as lenticular astigmatism. Then there is myopic astigmatic visual acuity when the principal meridians of the eyes or both are nearsighted while others may have hyperopic astigmatic visual acuity when their principal meridian or both are farsighted.

Other types of astigmatic visual acuity

Some people may have mixed astigmatic visual acuity and this happens when one principal meridian is nearsighted while the other is farsighted. There is yet another but very rare type of astigmatic visual acuity and this is known as keratoconus and during this stage the cornea becomes progressively smaller. There are chances of these becoming severe so that the only option left with you is a corneal transplant.

The most effective treatments are glasses and refractive surgery for the other three types of astigmatic vision defect where patients would see all objects as blurred. Your doctor may also suggest LASIK or PRK both laser type surgeries although the later may require more recovery time.

In all mild cases of astigmatic vision no medications are usually prescribed by the doctors as then you needn’t know how to cure astigmatism in such cases as they tend to disappear on their own.