超高度近视的准分子激光原位角膜磨镶术回退观察

目的了解超高度近视≥10．00（近视＋散光）]患者的LASIK（准分子激光原位角膜磨镶术）后的近视回退情况，并探讨影响其回退的主要因素。方法根据81例134眼超高度近视患者术前屈光度和手术光区（mm）分为-10．00≤D≤-13．00、-13．00〈D≤-15．00、D〉-15．003组和6．0〈光区≤6．5、5．5〈光区≤6．0、5．0〈光区≤5．5、4．5〈光区≤5．04组，运用Y。检验比较各组近视回退情况的差异。结果术前屈光度各组近视回退眼数差异均无显著性；6．0〈光区≤6．5、5．5〈光区≤6．0 2组与5．0〈光区≤5．5组近视回退眼数比较差异无显著性，而与4．5〈光区≤5．0组比较差异有显著性。结论手术光区的大小对术后回退的影响比术前屈光度大小对术后回退的影响要大。

To Evaluate the Regression of High Myopia Treated with LASIK

Objective To evaluate the regression of high myopia ≥10.00（myopia＋astigmatism）]treated with LASIK（laser in situ keratomileusis）and to find out the main influential factors. Methods According to their refraction before operation and their operative area（OA）, 81 high myopia patients（134 eyes） were divided respectively into 3 groups ： - 10.00≤D- 13.00-13.00≤D-15.00,D〉-15.00 and into 4 groups： 6.0〈OA≤6.5,5.5〈OA≤6.0,5.0〈 OA≤5.5,4.5〈OA≤5.0. To analyze the differences among groups in using X^2 test. Results The differences are not obvious among groups divided with their refraction before operation. Among 3 groups divided with their operative area： 6.0〈OA≤6.5,5. 5〈OA≤6.0,5.0〈OA≤5.5,the differences are not obvious, but which are different obviously from the group 4. 5〈OA≤5.0. Conclusion The operative area is more influential than the refraction before operation on LASIK in treatment of high myopia.