[1] Trokel S L,Srinivasan R, Braren B. Excimer laser surgery of the cornea [J]. Am. J. Ophthalmol., 1983, 96:710

[2] Farah S, Azar D,Gurdal C et al. Laser in situ keratomileusis: literature review of a developing technique [J]. J.Cataract Refract Surg., 1998, 24:989-1006

[3] Seiler T, McDonnell P J. Excimer laser photorefractive keratectomy [J]. Surv Ophthalmol, 1995, 40:89-118

[9] http://www.lambdaphysik.com/script/content.asp area=products&sitepages_id=124 [OL]

[11] Pettit G H, Ediger M N. Corneal-tissue absorption coefficientsfor 193 and 213 nn ultraviolet radiation [J]. Appl.Opt., 1996, 35(19): 3386-3391

[12] Pettit G H. Excimer laser ablaion of the cornea [J]. Opt. Eng., 1995, 34(3): 661-667