摘要
目的 探讨准分子激光散光性角膜切削术 (Photoastigmaticrefractivekeratectomy ,PARK)矫治复性近视散光的有效性、准确性和预测性。方法 采用Compak - 2 0 0型准分子激光机 ,对 34例 46眼复性近视散光行角膜椭圆形切削 ,根据散光度大小分为两组 :A组 (- 1 75～ - 2 75 )D ,B组 (- 3 0 0～ - 5 2 5 )D ,并随访 6个月以上 ,观察手术前后的视力、屈光度、散光轴夹角的变化。结果 术后 6个月视力≥ 0 8者 95 7% ,屈光度在± 1D内者占 84 8% ,散光及角膜散光矫正比例分别为 44 2 %和 46 2 % ,散光及角膜散光轴变化分别为 11 6 1°± 9 97°和 12 78°± 9 15°,A组及B组的矫正比例分别为 5 2 8%和 30 4%。结论 PARK矫正复性近视散光效果明显 ,但散光度越高 ,欠矫及回退的可能性越大。
Objective To study the efficacy,accuracy and predictability of photoastigmatic refractive keratectomy (PARK) for correction of compound myopic astigmatism. Methods Compak-200 Laser was used to correct compound myopic astigmatism in 46 eyes of 34 cases by the elliptical ablations.All patients were followed up for more than six months.Visual acuity,refraction,astigmatism and axis of astigmatism were evaluated.Meanwhile,all eyes were divided into two groups according to the astigmatism preoperation:group A(-1.75～-2.75) D,Group B(-3.00～-5.25) D.Results Of all the eyes treated 95.7% had uncorrected visual acuities of 20/25 or better and 84.8% were within 1 D of the intended correction six months after PARK.The correction rate of myopic astigmatism and corneal astigmatism were 44.2% and 46.2%,respectively.From pre-to post-operation,the change of astigmatic axes was (11.61°±99.7°),and angle of corneal astigmatic axes (12.78°±9.15°).The correction ratio is to were 52.8% for group B and for 39.4%.Conclusions The correction of compound astigmatism with PARK is effective and accurate,but undercorrection and regression were observed in those with high astigmatism preoperation .
出处
《武警医学》
CAS
2000年第4期209-211,共3页
Medical Journal of the Chinese People's Armed Police Force
关键词
近视
散光
PARK
角膜切削术
治疗
Myopia Astigmatism Photoastigmatic refractive keratectomy
