Astigmatism Correction Options
There are many different options available to treat astigmatism
Astigmatism is a condition where the cornea (the front window covering of the eye) is oval rather than round. This results in blurred vision and ghost images around objects. In order for light to focus precisely, the cornea needs to be as round as possible. Years ago the correction of astigmatism was one of the greatest hurdles to an excellent LASIK result. Now, with advances in LASIK such as precise eye tracking technology, it has become routine to fix even severe cases of astigmatism.
Limbal Relaxing Incisions (LRI)
LRI is a procedure which corrects astigmatism by using incisions to relax the tension in the cornea that causes it to be out of round. Incisions are placed near the junction of the white and colored part of the eye (the limbus), expand the cornea and effectively convert an oval to a circle, thereby correcting the astigmatism. LRIs can be done as a stand alone procedure or can be performed in conjunction with cataract and/or refractive lens implant surgery.
Toric Lens Implants
Toric IOLs are an advanced lens implant used during cataract or refractive lens surgery. These implants have astigmatism power incorporated into the lens optic to provide a precise way to reduce or eliminate astigmatism while simultaneously correcting cataracts and/or a patient’s nearsighted, farsightedness, or prebsyopia. A toric IOL is inserted into the eye and then rotated into alignment with the direction of the astigmatism as determined by the preoperative measurements and scans. There are no additional incisions required for this alternative. This allows for much greater levels of astigmatism correction and higher precision than can be achieved with LRI incisions.
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