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Ȱ Ʈ ʰ ٽ, , ̻ ذϰ ϴ 20 Ĺݿ Ȱ Ǿ (Radial Keratotomy), (Epikeratophakia), 谡(Keratomileusis) ߵǾ 1980뿡 øӷ(Excimer Laser) ߰ Ȱ ̷ ٽ, , , Ȯ ־ ٸ øӷ (Excimer Laser photorefratine keratectomy, PRK), (Laser assisted in-situ Keratomileusis, LASIK) εǰ , ֱٿ 5 ÷± LASEK(Laser assisted epithelial keratomileusis) Ӱ , üǰ ֽϴ.
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