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目的观察采用OUP-SBK刀头前弹力层下激光角膜磨镶术(SBK)治疗薄角膜(中央角膜厚度<500μm)中低度近视的安全性及有效性。方法 SBK治疗中低度近视后半年及1年进行随访,对比术前薄角膜与正常角膜厚度患者术后屈光度、视力、角膜地形图。结果薄角膜组34例65眼,正常角膜厚度组52例104眼。两组术后随访均未见圆锥角膜病例。两组最佳矫正视力、裸眼视力、屈光度、平均表面规则指数和平均表面非对称指数比较,差异均无统计学意义(均P>0.05)。结论 SBK治疗薄角膜中低度近视安全、疗效稳定,未见圆锥角膜等并发症。
Objective To observe the safety and efficacy of OUP-SBK laser pre-elastic laser keratomileusis (SBK) in the treatment of low myopia in the thin cornea (central corneal thickness <500μm). Methods SBK was followed up for six months and one year after the treatment of middle and low myopia. The postoperative refraction, visual acuity and corneal topography were compared between preoperative thin corneal and normal corneal thickness. Results In the thin cornea group, there were 34 eyes (65 eyes) and the normal cornea thickness group (52 eyes). There was no keratoconus in both groups after follow-up. There was no significant difference between the two groups in best corrected visual acuity, uncorrected visual acuity, refractive power, average surface area index and average surface asymmetry index (all P> 0.05). Conclusion SBK is safe and effective in the treatment of mild and moderate myopia in the thin cornea. No complications such as keratoconus have been found.