BBC - PRK and LASIK Laser eye surgery
PRK (PhotoRefractive Keratectomy) and LASIK (LAser in SItu Keratomileusis) are forms of corrective eye surgery. It is used to correct hyperopia (farsightedness), myopia (nearsightedness), and astigmatism (an irregular shaped cornea). It cannot correct Presbyopia, a loss of flexibility that is a normal result of aging.
The shape of the cornea affects how light is bent as it passes through, and...
BBC - PRK and LASIK Laser eye surgery
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