Corneal topographic and visual acuity analysis after excimer photorefractive keratectomy for myopia astigmatism 准分子激光角膜切削术治疗近视散光的角膜地形图及视力分析
Radial keratotomy （ rk ） and photorefractive keratectomy （ prk ) are other refractive surgeries used to reshape the cornea 其他用于角膜重新塑形的外科手术还有放射状角膜切开术( rk )和光性折射角膜切削术（ prk ） 。
1 pallikaris ig , siganos ds . excimer in situ keratomileusis and photorefractive keratectomy for correction of high myopia . j refract corneal surg 1994 ； 10 : 498 510 2陈家祺，王铮，杨斌.自动板层角膜成形联合准分子激光角膜切削术治疗高度近视.中华眼科杂志1996 ； 32 ： 4 6
Methods : we examined 102 patients who underwent photorefractive keratectomy and received topical steroids ( either fluorometholone 0 . 1 % or prednisolone acetate 0 . 5 % alone or combined ) as part of postoperative therapy 方法：我们检查了103名已行屈光性角膜切除术并以局部类固醇( 0 . 1丙酮缩氟氢羟龙或0 . 5泼尼松龙或二者兼有)作为部分术后治疗的病人。
There are many options for the correction of refractive errors today and these include the use of the excimer laser platform - like photorefractive keratectomy ( prk ) , laser in situ keratomileusis ( lasik ) , laser subepithelial keratomileusis ( lasek ) , and epilasik ; and those that require the placement of an intraocular lens inside the eye . each procedure , however , has pros and cons and the best procedure for a patient is ideally decided after a detailed examination of the eye by the surgeon 时至今日，用以矫正屈光不正的方法有很多种，包括：准分子激光技术例如激光屈光角膜切除术( photorefractivekeratectomy - prk ) 、角膜激光矫视手术( laserinsitukeratomileusis - lasik ) 、角膜上皮切割激光矫视手术( lasersubepithelialkeratomileusis - lasek ) 、 epilasik及人工晶体植入等等。每种手术皆有其利弊，病人宜先接受详细眼科检查，再由医生建议合适的手术。
Using the new excimer laser photorefractive keratectomy ( prk ) , the molecular bond of the corneal stroma is broken to allow recofiguration of the cornealsurface . this photo - ablation effect can treat severe myopia , astigmatism , and a variety of corneal diseases using photo - therapeutic keratectomy ( ptk ) . the safety , predictability , and long - term stability are well established in major western medical facilities 准分子激光技术在国内、外安全使用十一年，并得到众多医学权威机构的认定，具有安全性及精确度高、可预测性强、长期稳定性好的特点，我院已为几百名近视患者实施了这种手术， 90的患者术后视力达到1 . 0以上。
