准分子激光原位角膜磨镶术治疗中高度远视的疗效观察

LASIK for high and moderate hyperopia

目的 观察准分子激光原位角膜磨镶术（ｅｘｃｉｍｅｒｌａｓｅｒｉｎ ｓｉｔｕ ｋｅｒａｔｏｍｉｌｅｕｓｉｓ，ＬＡＳＩＫ） 治疗中高度远视的安全性及有效性。方法 对９ 例（１７ 只眼） 高度远视患者行ＬＡＳＩＫ。术前远视度数为＋５－５０ ～＋ ９－００ Ｄ，平均为（＋ ７－１８±１－００） Ｄ。术后随访观察１２ 个月以上。结果 术中无严重并发症，术后最佳矫正视力与术前相比，未见视力下降超过１ 行以上者。术后３ 个月时，屈光度基本稳定；术后１２ 个月时，平均远视度数为（ ＋１－７７±１－５６）Ｄ，未见屈光度在０ 以下者，屈光度在０～＋ １－００ Ｄ者占５３％ （９／１７）；平均裸眼远视力为０－６０±０－１７，其中≥０－５ 者１５ 只眼（８８％ ）；平均裸眼近视力为０－９８±０－２４ ，其中≥０－５ 者１７ 只眼（１００ ％） 、≥１－０ 者１３ 只眼（７７％ ）。结论 ＬＡＳＩＫ 对于中高度远视治疗具有良好的安全性及有效性，对于治疗参数尚需作进一步调整。

Objective To evaluate safety and efficacy of excimer laser in situ keratomileusis (LASIK) for high and moderate hyperopia Methods LASIK was performed on 17 eyes of 9 patients using the SCHWIND KERATOM F excimer laser The range of preoperative spherical equivalent was +5 50～+9 00 D, and its mean value, (+7 18±1 00) D All the cases were followed up for 12 months or longer Results There was no serious complication during the operation No eye lost more than 1 line of the best corrected visual acuity after surgery At 12 months, the mean postoperative spherical equivalent was (+1 77±1 56)D 52 9% of eyes reached 0 to +1 00 diopter 88 2% of eyes achieved an uncorrected far vision of ≥0 5 100 0% and 76 5% eyes got uncorrected near visual acuities of ≥0 5 and ≥1 0 respectively Conclusion It is demonstrated the LASIK is a safe and effective technique for the treatment of high and moderate hyperopia Further algorithm calibration must be made to avoid undercorrection