Laser treatments such as LASIK, PRK and SMILE can be used to correct various degrees of astigmatism. However, the degree of astigmatism and the structure of the cornea are important factors that affect the treatment method and success. Although high astigmatism is usually corrected with laser surgery, in some cases the shape and thickness of the cornea may be limiting for treatment.
Under which conditions is laser correction of high astigmatism possible?
Degree of Astigmatism: Laser surgery can usually successfully correct astigmatism up to 6 dioptres. In higher astigmatisms, the treatment plan is tailor-made and the characteristics of the cornea are carefully evaluated.
Thickness and Shape of the Cornea: The cornea must be thick enough for laser correction of high astigmatism. Since some tissue is removed from the cornea during laser treatment, the procedure may be risky in very thin corneas. For this reason, the thickness and shape of the cornea is evaluated with a detailed eye examination.
Special Treatment Protocols: Individualised laser treatment plans can be made for high astigmatism. Especially topography-guided laser treatments can correct astigmatism more accurately by taking into account the sensitive points of the cornea.
Treatment Options: Although LASIK is the most commonly used method, PRK may be preferred in patients with inappropriate corneal thickness or thinner corneas. In addition, SMILE laser treatment can also be effective in correcting astigmatism.
Recovery Process: The recovery process may be slightly longer in high astigmatism treatments and clear vision may take several weeks. However, the results are usually successful and the astigmatism is expected to improve significantly.
Whether high astigmatism can be corrected with laser should be assessed by an eye surgeon depending on your individual eye structure and condition. If laser treatment is not suitable, other treatment options such as ring keratoplasty or intraocular lenses may be considered.
