Astigmatism: Causes and Treatments

astigmatismAstigmatism is a common eye disorder that normally results in blurred vision. A person’s cornea is usually spherical in shape. Understanding how it works is important to understand the effects of astigmatism. When light enters the cornea, it is reflected in all directions, thereby causing a focused image to be formed on the retina. However, when one suffers from astigmatism, the shape of the cornea tends to be distorted, and, as a result, it becomes difficult to form sharp and focused images, hence the blurred vision. A closer look at astigmatism: causes and treatment will help you understand the condition further. 

Causes of Astigmatism

First off, you should note that astigmatism occurs in almost everyone to some degree. Although some experts claim the cause is unknown, the majority of the cases are congenital, meaning the condition is present at birth. It is believed to be a trait that is present in multiple generations. Other causes include a unique condition called keratoconus.

Do you spend plenty of time in front of your computer? Well, that is also believed to be a major cause or contributing factor. Furthermore, incorrect posture can also bring forth enhanced pressure on the cornea, distorting the curvature.

Treatment of Astigmatism

Quite often, the treatment normally varies with the magnitude of the condition. Mild and severe cases call for different types of treatment. Treatment options can be complicated by the presence of other conditions such as nearsightedness and farsightedness. Listed below are the typical treatments available.


Eyeglasses constitute a gradual start to astigmatism treatment since they have been a typical treatment, enhancing visual sharpness. They are used as a means to correct the distortion caused by the astigmatism.

Contact Lenses

Corrective lenses are normally used for severe cases. After tests and measurements, you will be fitted with a toric style lens which is frequently used in the treatment of such cases due to their high light bending power. For mild cases, a gas permeable rigid contact lens is used. Other types you might be able to choose from include Acuvue advance, astigmatism bifocal lens, which may also be available in colors.


Through laser refractive surgery, astigmatism can be corrected. The procedure alters the shape of the cornea, making it function as designed. Surgery is used for severe cases, with unsatisfactory results from other treatments. Note that there are other surgical possibilities, but one must have healthy eyes that are free from any retinal disorders or diseases to be eligible for surgery.

Moreover, rapid changes and advancements in technology will continue to bring forth other treatment options, including both surgical and corrective procedures.

If you suspect that you have astigmatism, you should visit an ophthalmologist. This condition is easy to diagnose and a variety of treatment options are available that will improve your vision right away.