But then toric intraocular lenses were developed for cataract replacement surgery. Up until the last decade or so, the only option for correcting astigmatism was LRI. Schnipper creates limbal relaxing incisions in the limbus, this takes the stress off the cornea and it becomes less steep and more round. With astigmatism, the cornea is usually steeper and more of an oval shape. This leads to blurred or distorted vision.
When a patient has astigmatism, the irregularities in the shape of the cornea create refractive errors where the eye fails to focus light equally on the retina. How does Limbal Relaxing Incision Surgery correct astigmatism? But it can also be a stand-alone procedure if a patient wants to simply correct for astigmatism. Schnipper usually performs LRI as part of his cataract surgeries to further remove the need for the patient to wear glasses in the future. Candidates for limbal relaxing incision surgeryĬandidates for limbal relaxing incision surgery have mild to moderate astigmatism. As these incisions heal the cornea flattens and becomes more symmetrical, correcting for astigmatism. The procedure only adds a few minutes to the cataract procedure. These are made at the steepest part of the cornea. Then he makes several tiny incisions in the periphery of the cornea with a diamond blade. Schnipper first removes the cataract-clouded natural lens and replaces it with the artificial permanent IOL. If LRI is done in conjunction with cataract surgery, Dr. Limbal Relaxing Incisions with Cataract Surgery These incisions allow the cornea to relax and take a more rounded shape, reducing or eliminating astigmatism. Limbal relaxing incisions are made in the periphery of the cornea, an area known as the limbus. The goal with a limbal relaxing incision (LRI) procedure is to release pressure on the cornea that is causing it to be shaped more like a football rather than the round shape necessary for the accurate focus of light on the retina at the back of the eye. Schnipper usually creates limbal relaxing incisions during cataract surgery to help his patients no longer need eyeglasses. The best option for reducing small to moderate amounts of astigmatism is limbal relaxing incision surgery. Astigmatism is very common and can accompany any other form of refractive vision error. This creates refractive errors because the light entering the eye is focused unevenly. When you have astigmatism your cornea is more of an oval shape than round.
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