1Helmy SA, Salah A, Badawy TT, et al. Photorefractive keratoectomy and laser in situ keratomileusis for myopia between 6.0 and 10.0 diopters [ J ]. J Refract Surg, 1996,12:417 421.
2Sahah T,Warlng GO,Maghraby A,et al. Excimer laser in situ keratomileusis under a corneal flap for myopia of 2 to 20 diopter[ J]. Am J Ophthalmol, 1996,121 : 143-155.
3Anschutz T. Laser correction of hyperopia and presbiopia [ J].Int Ophthalmol Clin, 1994,34 : 107-155.
4Dausch D, Klein R, Schroder E. Excimer laser photorefractive keratctomy for hyperopia[ J]. Refract Corneal Surg, 1993,9:20-28.
5Goker S, Er H, Kahvecioglu C. Laser in situ keratomileusis to correct hyperopia from +4. 25 to +8.00 dioters[J]. J Refract Surg,1998, 14:26-30.
6Ditzen, K, Huschka H, Pieger S. Laser in situ keratomileusis for hyperopia[J]. J Cataract Refract Surg, 1998,24:42-47.
7Kezirian GM, Gremillion CM. Automated lamellar keratoplasty for the correction of hyperopia[ J]. J Cataract Refract Surg, 1995,21:386- 392.
8Grandon SC, Sanders DR, Anello RD, et al. Clinical evaluation of hexagonal keratotomy for the treatment of primary hyperopia[J]. J Cataract Refract Surg, 1995,21 : 140-149.
10Koch DD, Kohnen T, McDonnell PJ, et al. Hyperopia correction by noncontact holmium: YAG laser thermal keratoplasty: U. S. phase Ⅱ A clinical study with 2-year follow-up[J]. Ophthalmology, 1997, 104 : 1938-1948.
