非球面人工晶状体植入术后视功能的临床研究

Clinical study of visual function after implantation of aspheric intraocular lens

目的:评价Canon Staar KS—3Ai非球面人工晶状体(IOL)对提高年龄相关性白内障患者术后视功能的作用。方法:年龄相关性白内障患者98例(126眼)随机分成两组。在白内障超声乳化吸除术后,观察组52例(65眼)植入非球面IOL(Canon Staar KS—3Ai),对照组46例(61眼)植入球面IOL(Allergan Sensor AR40e)。观察患者术后的裸眼视力(uncorrected visual activity,UCVA)、最佳矫正视力(best corrected visual activity,BCVA)、屈光状态、对比敏感度(contrast sensitivity,CS)、波前像差的均方根(root mean square,RMS)值。随访时间为术后6mo。结果:术后6mo两组UCVA、BCVA、屈光状态差异无统计学意义。无眩光环境下12,18c/d空间频率和眩光环境下6,12,18c/d空间频率上观察组CS明显优于对照组。在瞳孔直径6mm时,观察组4阶像差、4阶球差、总高阶像差RMS值低于对照组。在瞳孔直径6mm时3阶像差、5阶像差RMS值及瞳孔直径3mm时两组高阶像差RMS值差异无统计学意义。结论:非球面IOL眼视觉质量明显优于球面IOL眼。

AIM ： To of aspheric age-related evaluate the visual function after implantation intraocular lens （IOL） in patients＇ eyes with cataract. METHODS： Ninety-eight cases （126 eyes） with age related cataract were classified randomly into two groups. Observation group （52 cases, 65 eyes） was implanted with aspheric IOL （Canon Staar KS-3Ai）, control group （46 cases, 61 eyes） with natural spherical IOL （Allergan Sensor AR4Oe）. Uncorrected visual activity （UCVA）, best corrected visual activity （BCVA）, refraction, contrast sensitivity （ CS）, and the root mean square （RMS） values of wavefront aberrations were examined six months postoperatively. RESULTS： Six months after surgery, there were no significant differences in UCVA, BCVA and refraction between two groups. Without glare the observation group showed significantly higher spatial CS than the control group in 12c/d and 18c/d frequencies, with glare the observation group showed higher in 6c/d, 12c/d and 18c/d frequencies. The RMS values of 4^th-order aberration, 4^th- order spherical aberration and total high order aberration in the observation group were lower than those in the control group at 6mm pupil diameter six months postoperatively. RMS values of 3rd and 5^th-order at 6mm pupil diameter and RMS values at 3mm pupil diameter, no significant differences were found in both groups. CONCLUSION： Our study shows the optical quality of eyes implanted with aspheric IOLs was significantly better than spherical IOLs.