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While less famous than lasik prk precedes lasik by a few years. Learn more about how the eye works. Lasek Surgery Or Laser Epithelial Keratomileusis Is Very Similar To Prk Surgery The Main Difference Being Th Lasek Eye Surgery Lasik Eye Surgery Eye Surgery Photorefractive keratectomy prk is a laser assisted surgery used to correct refractive errors like nearsightedness farsightedness and astigmatism. Prk surgery . Prk surgery is typically performed at an outpatient surgery center. It is a short procedure that should entail a visit of under two hours. Prk photorefractive keratectomy is a laser eye surgery that corrects refractive vision errors by changing the shape of the cornea. It s used to improve vision by correcting refractive errors in the eye. Also known as prk this type of laser eye surgery can help if you are nearsighted farsighted or have astigmatism. Nearsightedness farsightedness and astigmatism are all. For this reason some refractive surgeons prefer p...