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Laser subepithelial keratomileusis (Lasek) is a refractive procedure that utilises aspects of both laser in situ keratomileusis (Lasik) and photorefractive keratectomy (PRK) which was first performed in 1996 by Dimitri Azar at the Massachusetts Eye and Ear Infirmary, Boston.1
Alternative terms for Lasek exist such as epithelial flap photorefractive keratectomy,2 subepithelial photorefractive keratectomy,3 laser-assisted subepithelial keratectomy,4 excimer laser subepithelial ablation5 and Epi-Lasek.6 A dilute alcohol solution is used to loosen the epithelial adhesions with the underlying stroma. This then allows the loosened epithelium to be brushed to the side for laser ablation to be applied to the stroma and the epithelial sheet is then returned.
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