Astigmatism Correction

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LASIK Eye Surgery Information

Astigmatism Correction is Difficult to Understand

Astigmatism is one of the most difficult vision problems to understand. Astigmatism is a very common condition that most people have to a certain degree. Slight amounts of astigmatism do not require correction since it does not affect vision. Large amounts of astigmatism affect a person’s vision similar to nearsightedness or farsightedness by not allowing light to focus on a single point on the retina. There are three types of astigmatism:

  1. Hyperopic Astigmatism (farsighted astigmatism): caused by reflecting light in front of the retina.
  2. Myopic Astigmatism (nearsighted astigmatism): caused when light reflects behind the retina.
  3. Mixed Astigmatism: caused when light is reflected both in front and behind the retina.

In a healthy eye, the cornea is shaped spherically like a basketball, while someone who has anastigmatism has an eye that is shaped more oblong like a football. Because the light coming into the eye does not reflect properly on the retina, astigmatism symptoms can include headaches, blurred vision, and difficulty reading or using a computer for long periods of time.

Astigmatism Correction

The primary and most common form of astigmatism correction is eye glasses, especially in children who are not yet able to wear contact lenses or have not reached the appropriate age to undergo refractive surgery such as LASIK eye surgery. 

Many people think they cannot have LASIK eye surgery because they have an astigmatism, however LASIK surgery is in fact an option for people who are searching for astigmatism correction. Like anyone else, those who have severe astigmatism may not be good medical candidates for LASIK eye surgery, so a thorough eye examination is required to find out if astigmatism correction through LASIK eye surgery is advisable for someone.

LASIK eye surgery is an option for astigmatism correction because it uses a laser to reshape the cornea into a more normal shape, thus eliminating nearsightedness, farsightedness or astigmatism. Often, a person will suffer from nearsightedness and astigmatism or farsightedness and astigmatism. Individuals deemed good candidates for LASIK eye surgery can have both vision problems corrected with LASIK.

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