【摘要】 目的：探讨准分子激光原位角膜磨镶技术（laser in situ keratomileusis, LASIK）治疗高度近视的疗效。
方法：应用日本Nidek EC 5000II准分子激光仪，采用多步分区切削法治疗高度近视。按屈光度分为两组，I组：6.00～9.00D，128眼；II组：9.00～14.00 D，147眼。术后随访1a，并对结果进行分析。
结果：两组患者术后1a裸眼视力≥0.6者占89.6%，≥1.0者占55.6% (其中I组≥0.6者占95.1%，II组≥0.6者占88.9%)。术后最佳矫正视力大于术前者占38.1%，小于术前者占6.0%，94.0%术后最佳矫正视力不变或上升。术后1a实际矫正度在预测矫正度±1.00D内者占81.3%，±2.00D内者占90.2%。激素性高眼压占0.04%。
结论：准分子激光原位角膜磨镶技术多步分区切削法治疗高度近视伴薄角膜及超高度近视是一种安全、有效，且稳定性较好的方法，能有效预防屈光回退的发生，同时可以减少术后眩光和暗视力下降等现象。
【关键词】 准分子激光原位角膜磨镶技术；高度近视；分步多区切削
The analysis of zonedivision LASIK for treatment of high myopia
JieMin Zou,JianHua Sun,ShuangXi Wang,YueFen Liu
Department of Ophthalmology, Loudi Central Hospital, Loudi 417000, Hunan Province,China
Abstrat
AIM: To evaluate the therapeutic effects of excimer laser in situ keratomileusis (LASIK) for the correction of high myopia.
METHODS: Japanese Nidek EC 5000Ⅱexcimer laser system and zonedivision LASIK were used to treat high myopia. The patients were divided into 2 groups according to the preoperative diopters, group Ⅰ: 6.009.00D, 128 eyes; group Ⅱ:9.0014.00D, 147 eyes. The followup was 1 year and the results were statistically analyzed.
RESULTS: At one year postoperatively, 89.6% eyes achieved uncorrected vision acuity of 0.6 or better, and 55.6% eyes were improved to 1.0 or better (95.1% of eyes in group Ⅰattained vision acuity of ≥0.6 and 88.9% in group Ⅱ respectively). 94.0% of all eyes were improved or their best corrected visual acuity did not change (among those, 38.1% eyes had better visual acuity compared to preoperative visual acuity), whereas visual acuity of 6.0% eyes were worse. Postoperative diopters of 81.3% eyes were within ±1.00D and 90.2% within ±2.00D. During one year after surgery, 0.04% eyes were complicated with glaucoma because of using steroid drops.
CONCLUSION: Zonedivision LASIK for treatment of high myopia with thin cornea or severe myopia is a safe and effective refractive surgery with satisfactory stability. It is help to prevent refractive regression and diminish postoperative glare and bad night vision.
KEYWORDS: LASIK; high myopia ; zonedivision LASIK
0引言
近年来准分子激光原位角膜磨镶技术（laser in situ keratomileusis ,LASIK）是治疗近视的一种安全，有效的屈光性角膜手术，临床应用广泛的一种角膜屈光主流术式。其低、中度近视的疗效得到肯定，但是一些高度近视治疗后往往会产生眩光，屈光回退及暗视力下降等现象[1]。我科应用LASIK多步区的切削方法治疗>6.00D高度近视患者，这些现象均有改善，现将200604/200704在我科行LASIK分步多区切削治疗的疗效分析报告如下。
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