Saturday, June 7, 2014

Astigmatism Causes and Correction Through Laser Eye Surgery

What is Astigmatism?
Astigmatism is a refractive error that occurs when the front surface of your eye (cornea) or the lens inside the eye is slightly irregular or cylindrical in shape, resulting in vision being blurred or distorted at all distances. Simply put, astigmatism is a condition derived from a cornea or lens that’s stretched into an irregular shape. Instead of being shaped round, the corneas of people with astigmatism are often oblong. This causes a refractive error, distorting light as it enters your eyes. As a result, images appear blurry. Astigmatism is not a disease, but a common visual condition.

What causes Astigmatism?
When the front surface of your eye (the cornea) or the lens inside the eye is more oval than round, light does not focus properly on the back inside surface of your eye (retina). Astigmatism is caused by small differences in the growth and alignment of the components of the eye. In some cases, it may be hereditary or it may result from such factors as pressure of the eyelids on the cornea. Blurry vision doesn’t automatically mean you have astigmatism. It may mean something else and it is recommended to see your eye doctor immediately. 
 
How common is Astigmatism?
Most people have some degree of astigmatism. It is rare to have a perfectly round optical surface. Small amounts of astigmatism may not require correction with glasses. However, moderate to highly astigmatic eyes will need corrective lenses.
What are signs/symptoms of astigmatism?
Even people with mild to moderate astigmatism will usually have blurred or distorted vision. They may experience headaches, eyestrain, fatigue, blurred vision or distortion at certain distances. Kids with astigmatism and adults may have difficulty reading text or seeing fine details in objects both near and far.

How is Astigmatism diagnosed?
A comprehensive eye examination by your ophthalmologist or optometrist will include tests to check for astigmatism.

Is there anything for Astigmatism Correction
Almost all levels of astigmatism can be optically corrected with properly prescribed and fitted eyeglasses or contact lenses. Laser eye surgery is another option for those who are candidates. Wavefront technology has helped with astigmatism correction, it is recommended to have your laser eye surgery done with Wavefront technology. 
 
Does astigmatism get progressively worse?
Astigmatism may change with time. Regular care from an ophthalmologist or optometrist can, however, help to insure that proper vision is maintained.

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