[关键词]
[摘要]
目的：探讨西藏高原地区影响准分子激光原位角膜磨镶术(laser
in situ keratomileusts，LASIK)治疗近视过矫的因素及解决办法。
方法：对126例252眼近视患者中LASIK术后明显过矫的32例58眼术前、术后的相关资料进行分析。
结果：术后2mo过矫者32例58眼(23.0%)，裸眼视力0.5～0.8，过矫范围+1.50～+2.25DS，主观插片均≥1.0； 术后6mo过矫者5例7眼(2.8%)，裸眼视力0.8～1.0-2，过矫范围+0.75～+1.25DS，主观插片均≥1.0。其中过矫的患者术前角膜厚度500～563μm，术前屈光度数为-5.00～-7.50D，散光-1.50～-2.75DC，术前最佳矫正视力≥1.0。
结论：我院LASIK手术治疗近视过矫患者较多，恢复时间较长，可能与当地海拔、温度、湿度、手术参数及患者的配合情况等因素有关。
[Key word]
[Abstract]
AIM:To investigate the factors and solutions of Tibetan Plateau excimer laser
in situ keratomileusis(LASIK)for myopia overcorrection.
METHODS: The relevant information, 32 cases(58 eyes)in 126 cases(252 eyes)had obvious overcorrection after LASIK were analyzed.
RESULTS: Two months after surgery, 32 cases(58 eyes)overcorrection(23.0%), uncorrected visual acuity of 0.5～0.8, overcorrection range of +1.50 ～ +2.25DS, subjective inserts were ≥1.0; Five case(7 eyes)overcorrection 6mo after surgery(2.8%), uncorrected visual acuity 0.8～1.0-2, overcorrection range is +0.75 ～ +1.25DS, subjective inserts were ≥1.0. Corneal thickness of overcorrection was 500～563μm, preoperative refraction was -5.00 ～ -7.50D, astigmatism -1.50 ～ -2.75DC, preoperative best corrected visual acuity ≥1.0.
CONCLUSION: Overcorrection and long recovery time after LASIK in Tibet, possibly with local factors altitude, temperature, humidity, surgical parameters and situation.
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[基金项目]
