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An astigmatism correction surgery refers to several refractive surgical procedures designed to correct astigmatism, a vision condition caused by an irregularly shaped cornea or lens. The goal is to make the eye's refractive surface more uniformly curved.
read more about astigmatism correction surgery ...The surgical methods used are primarily laser-based and incisional. Laser procedures (like LASIK and PRK) use an excimer laser to ablate (remove) corneal tissue, reshaping the surface into a more spherical curve. Incisional methods, like Limbal Relaxing Incisions (LRI), involve making tiny cuts at the edge of the cornea to relax the steepest meridian. The choice of method depends on the severity of the astigmatism and the patient's existing vision issues.
Laser reshaping improves vision by correcting the unevenness of the cornea. Astigmatism causes light to focus at multiple points instead of one point on the retina. The laser ablation creates a smoother, more uniform curve, ensuring light focuses precisely for clear sight.
A toric intraocular lens is used during cataract surgery. If the patient has astigmatism, the cloudy natural lens is removed and replaced with a toric lens, which has built-in correction to neutralize the astigmatism. This provides simultaneous vision correction and cataract removal. Using a toric lens eliminates the need for a separate procedure to address the astigmatism later.
The post-surgical results are generally excellent, providing significantly clearer vision without the need for glasses or contact lenses. Recovery time is fast for laser procedures (often 24 hours), though full healing takes several weeks.
Refractive surgeries are designed to eliminate the need for corrective lenses. Contact lens wearers who opt for surgery trade the daily routine of lens care for a long-term surgical solution to their vision correction needs.
Most common forms are correctable. Severe or irregular forms may be limited by the thickness of the cornea.
No, the eye is numbed with drops. Patients feel pressure during the procedure but no pain.
Yes, but only for cosmetic reasons or if residual refractive error remains.
If your vision is "ghosted" or blurry at all distances, you likely have astigmatism. Before surgery, a doctor must perform "Corneal Topography" to rule out Keratoconus. If the cornea is too thin, traditional LASIK may be unsafe, and alternative procedures like PRK or ICL may be recommended.
AAO. Astigmatism Surgery (aao.org). 2024.
Mayo Clinic. LASIK Eye Surgery (mayoclinic.org). 2024.
ASCRS. Refractive Surgery Standards (ascrs.org). 2024.
StatPearls. Astigmatism Correction (ncbi.nlm.nih.gov). 2024.