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为探讨角膜屈光手术后角膜地形图变化与临床散光的关系，对ＭＬＫ和ＬＡＳＩＫ术后４８例８６只眼行术前及术后６个月角膜地形图测量分析，并与同期的视力和验光结果进行比较。结果表明，术后柱镜屈光度及ＳＲⅠ、ＳＡⅠ及ＳｉｍＫ较术前明显升高，３２．６％的病人有切削区偏中心，但全部病人的裸眼视力及术后矫正视力均好于术前。裸眼视力好于或等于术前者占７６．３４％。提示以上现象的发生对手术效果无影响，其原因可能与后巩膜葡萄肿导致的视轴偏位使激光切削区偏离角膜光学中心有关
To investigate the relationship between corneal topography changes and clinical astigmatism after corneal refractive surgery, 48 cases (86 eyes) of MLK and LASIK underwent corneal topography before and after operation for 6 months, and compared with the same period of vision and optometry The results are compared. The results showed that postoperative diopter and SR Ⅰ, SA Ⅰ and SimK were significantly higher than preoperative, 32.6% of the patients had a cutting center eccentric, but all patients with uncorrected visual acuity and corrected visual acuity were better than preoperative. Uncorrected visual acuity better than or equal to preoperative 76.34%. Tip of the above phenomenon had no effect on the surgical results, the reason may be posterior staphyloma caused by visual axis deviation from the laser cutting zone deviates from the corneal optical center