准分子激光屈光性角膜切削术治疗超高度近视眼

ONE YEAR RESULT OF EXCIMER LASER FOR PHOTOREFRACTIVE KERATECTOMY IN VERY HIGH MYOPIA

采用ＶＩＳＸ２０／２０型准分子激光仪对５３例（８４眼）超高度近视（－１０．００～１６．００）行准分子激光屈光性角膜切削术，术后随访１年以上。结果显示，术后裸眼视力≥０．５，１．０者分别占８１．０％和２３．９％；实际矫正屈光度与术前预矫屈光度相差＜±２．００Ｄ者占７５．０％；角膜上皮下雾状混浊≥２级的发生率占１３．１％。

We corrected 53 cases (84 eyes) of very high myopia using photorefractive keratectomy(PRK) with VISX 20/20 excimer laser, and followed up the cases more than one year. The rates of visual acuity more than or equal to 0.5 or 1.0 were 81.0% and 23.9%, 75.0% eyes were within ±2.00 diopter of the desired emmetropia. Grade 2 or more severe corneal haze were presented in 13.1% eyes. PRK with VISX 20/20 excimer laser may be an effective method to correct very high myopia from -10.00 to -16.00 diopters.