The Study of Myopia and Photorefractive Keratectomy

Myopia and refractive correction corneal ablation myopia is defined as myopia and occurs when the refractive elements of the eye (cornea and crystalline lens) place the image in front of the retina. Myopia is common in young children, but as babies get old they usually reach normal vision levels (Vander & Gault, 1998). Myopia occurs in about 25% of the adult population in the United States. Many adults use orthodontic lenses or contacts to correct myopia of myopia with 20/20 eyesight (Drexler et al., 1998).

As of 2017, three major types of corneal intervention can be used to correct myopia. (The cornea is the most transparent part of the eye). There are refractive keratectomy (PRK), laser assisted in situ corneal transplantation (LASIK), in which the first laser device was approved by the US Food and Drug Administration (FDA) in 1995 in order of technology maturity. ) - FDA approved since 1998, and small incision microlens extraction (SMILE) - FDA approved from 2016. Three are surgical interventions and their degree of invasion is getting lower and lower.

PRK - Refractive keratectomy (PRK) is the first laser eye surgery for vision correction, reforming the cornea and correcting myopia, hyperopia and astigmatism. This method involves removing and discarding the outer layer of the cornea using ultraviolet lasers called exciplex lasers before reshaping the underlying corneal tissue. LASEK - laser auxiliary subepithelial keratotomy (LASEK) is used in conjunction with PRK to treat myopia, hyperopia or astigmatism. This procedure involves the use of a laser to form a thin flap on the lifted cornea to expose corneal tissue which is replaced after reforming the cornea with a laser laser.

PRK, or refractive keratectomy is a laser treatment used to correct reasonable myopia and vision. As with additional laser eye surgery, your eyesight can be corrected by changing the cornea. The cornea is an obvious front element of the eye. Light passes through the cornea and focuses on the retina behind the eye. If the cornea is distorted, the light does not concentrate on the retina and the visualization is impaired. PRK ophthalmic surgery is an important operation