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A member asked:
Can you explain why lasik can only work on the eyes up to a certain % of vision loss with astigmatism?
5 doctors weighed in across 3 answers
Corneal shape: Astigmatism can best be thought of as a spoon or football-shaped cornea. Lasik reshapes the cornea to make it round and alters the degree of roundness to adjust focus. Lasik accomplishes this by removing corneal tissue and we have to operate within safe parameters leaving enough cornea behind. Astigmatism can present problems with this.
Answered 10/3/2016
6.3k views
Cornea limitation: Depends on the cornea shape, thickness, and how much and where tissue can be removed in order to counterbalance astigmatism. If too much tissue is removed it can cause problems and ectasia and if the wrong tissue is removed, it can create more refractive error.
Answered 10/2/2012
6.3k views
LASIK astigmatism : Laser vision can correct the regular astigmatism of the vast majority of patients. If the astigmatism is irregular in nature, then laser can not be performed.
Answered 10/9/2012
5.6k views
Related Questions
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Can lasik help people with astigmatism? A couple of years ago, i was told by my eye-doctor that i had astigmatism. I'm currently thinking about getting lasik correction, but was told by some sources that the procedure is not effective for people with asti
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A member asked:
How long does it take for vision to normalize after lasik surgery for an astigmatism?
4 doctors weighed in across 2 answers
A member asked:
Can you tell me what to expect with someone who has had lasik surgery with moderate to severe astigmatism?
A doctor has provided 1 answer
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