There is a misconception that astigmatism cannot be corrected with corneal refractive procedures (SMILE, LASIK, or PRK). These procedures are very good at correcting astigmatism, with the excimer Laser tracking the eye throughout the procedure.
There are some limitations however:
1) The astigmatism needs to be regular (as apposed to irregular astigmatism as seen in Keratoconus)
2) The maximum degree of astigmatism that can be corrected is up to -5.00 dioptres.
Visual results from refractive surgery for astigmatism is generally excellent, although with higher amounts of astigmatism a second treatment maybe required (enhancement) at no cost to the patient within 1 year.
The degree and form of astigmatism is assessed at your initial clinic assessment. This is done using a number of instruments including a corneal topographer (we use a Pentacam which is the gold standard instrument for astigmatism measurements). The Pentacam has software which can detect the nature of your astigmatism and assess if corneal refractive surgery is an option for you.
All surgical procedures carry a small risk of complication, these are discussed in detail at the time of your consultation.
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