Sheludchenko V M, Fadeĭkina T L
Vestn Oftalmol. 2002 Mar-Apr;118(2):25-6.
The paper discusses the results of 28 laser operations carried out by bitoric nomograms and 18 operations carried out by monotoric nomograms for correction of high astigmatism (3 and more diopters) by laser in situ keratomileusis (LASIK). The patients' ages varied from 21 to 38 years. Eximer photokeratectomy was carried on a EC 5000 Nidek laser, lamellar section of the cornea was made with a Hansatome microkeratome. Bitoric keratoablation was carried out by an original method. Clinical refraction, visual acuity, and incidence of reoparations were evaluated in both groups 6 months postoperation. Differences in refraction and visual acuity were negligible. The incidence of reoparations in bitoric keratoablation was 25%, in monotic one 44%. Visual acuity with correction was higher after bitoric keratoablation of astigmatism. Hence, bitoric keratoablation is preferable for correction of high astigmatism by LASIK.
本文讨论了通过双区角膜地形图引导进行的28例激光原位角膜磨镶术（LASIK）治疗高度散光（3屈光度及以上）的手术结果，以及通过单区角膜地形图引导进行的18例手术结果。患者年龄在21岁至38岁之间。使用EC 5000尼德克激光进行准分子光角膜切削术，用汉斯角膜刀制作角膜板层切口。双区角膜切削采用一种原创方法。在术后6个月对两组患者的临床验光、视力及再次手术发生率进行评估。两组在验光和视力方面的差异可忽略不计。双区角膜切削的再次手术发生率为25%，单区角膜切削为44%。散光的双区角膜切削术后矫正视力更高。因此，双区角膜切削在LASIK治疗高度散光方面更具优势。
