An ophthalmologist doing LASIK surgery utilizes lasers to reshape the cornea of the eye to improve focus. With LASIK surgery, individuals with astigmatism, hypermetropia, and myopia have a long-term substitute for contacts or glasses. This is a bladeless process since it is carried out using two lasers. The corneal flap is created using a femtosecond laser, and the cornea's curvature is altered using an excimer laser. To improve eyesight and lessen reliance on glasses or contact lenses, two laser eye surgery techniques are available: photorefractive keratectomy (PRK) and laser-Assisted Sub-Epithelial Keratectomy (LASEK). Using an excimer laser to ablate (remove via vaporization) a small amount of tissue from the thickest area of the cornea at the front of the eye, right behind the corneal epithelium, PRK and LASEK permanently alter the shape of the anterior central cornea. Before the ablation, the cornea's outer layer is removed.
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