Astigmatism Correction with Lasik

Astigmatism may develop as a result of a problem in the curve of the cornea. The shortening of the cornea at the ends may lead to conditions of near-sight or far-sight. The change in the shape of the cornea causes a different curvature ratio in the main axis so, when light passes through the cornea, images are distorted. Hereditary is a factor in astigmatism and, in some cases, it can occur after transplant or cataract surgery.

Types
There are different kinds of astigmatism. Simple astigmatism involves one axis. Compound astigmatism, in addition to affecting axis, is related to conditions of near-sight or far-sight.  Mixed astigmatism is the condition whereby an axis focuses before the retina (short) and behind it (far).
 
Symptoms
The most common symptom is image distortion. The patient may also experience headache or eye trouble. In addition, depending on age and the type of astigmatism, symptoms can vary or affect vision.

Benefits
Astigmatism correction through laser, or Lasik, frees people from eyeglasses or contact lenses. Other benefits include cost savings on purchase of related products, improved personal appearance, improved quality of life and possible relief of allergies or discomfort caused by contact lenses.

More than 98% of patients recover a level of vision that allows them to perform daily activities without using corrective lenses. Best results are seen in people whose astigmatism is not severe.

Lasik Procedure
It is an ambulatory procedure that uses cold and low intensity laser rays to mold the cornea and thereby correct astigmatism.

Time
The procedure takes less than a minute. Consultation, preparation and post-surgery care takes approximately two hours.