不同球差非球面人工晶状体植入术后的视觉质量分析

发布时间：2018-01-19 04:14

本文关键词： 球面像差非球面人工晶状体调制传递函数最佳矫正球差　出处：《眼科新进展》2016年11期 　论文类型：期刊论文

【摘要】：目的比较个性化选择0、-0.20μm、-0.27μm三种不同球差非球面人工晶状体(intraocular lens,IOL)及其随机植入术后的视觉质量,探讨最佳矫正球差值。方法前瞻性病例对照研究。选取就诊于我科的白内障患者125例(145眼),术前使用i Trace全视觉功能分析仪测量角膜高阶像差,根据角膜球差(spherical aberation,SA)值的不同分为A、B、C三组,分别植入三种不同SA非球面IOL,对照组(D组)随机植入非球面IOL。术后3个月分析全眼及角膜的高阶像差、调制传递函数(modulation transfer function,MTF)、斯泰尔比值(Strehl ratio,SR)、最佳矫正视力(best corrected visual acuity,BCVA)。结果 (1)手术前后角膜SA差异无统计学意义(P0.05),全眼慧差(Coma)、三叶草差(Trefoil)及总高阶像差(total high order aherration,t HOA)手术前后的变化与角膜SA的变化相似。(2)三组患者BCVA差异无统计学意义(P0.05)。(3)3 mm瞳孔直径下,四组IOL眼的角膜SA、全眼MTF t HOA及SR差异均无统计学意义(均为P0.05);全眼SA差异有统计学意义(P=0.019),A组、B组、C组间差异无统计学意义(P0.05),但均D组(P=0.000)。(4)5 mm瞳孔直径下,四组IOL眼角膜SA差异无统计学意义(P0.05);全眼SA、t HOA差异均有统计学意义(均为P=0.000),A、B、C三组间差异无统计学意义(P0.05),但均D组(P=0.000);全眼MTF t HOA及SR差异均有统计学意义(均为P0.05),A、B、C三组间差异无统计学意义(P0.05),但均D组(P=0.000)。结论超声乳化白内障吸出术前后角膜高阶像差无差异。小瞳孔直径下,不同SA设计非球面IOL眼术后视觉质量比较无差异。大瞳孔直径下,根据术前SA个性化选择较随机植入非球面IOL眼可获得较好的视觉质量。
[Abstract]:Objective to compare the three different spherical aberrations of aspherical intraocular lens (IOL) between 0 and 0. 20 渭 m and 0. 27 渭 m. IOL) and its visual quality after random implantation, to explore the best corrected ball difference. Methods A prospective case-control study was conducted. 125 cataract patients (145 eyes) were selected from our department. The high-order aberration of cornea was measured by using I Trace total visual function analyzer before operation. According to the different values of spherical aberration of cornea, Agna B was divided into two groups. In group C, three different kinds of SA aspheric IOLs were implanted, and the control group (group D) were randomly implanted with aspheric IOL. The high order aberrations of the eyes and cornea were analyzed 3 months after operation. Modulation transfer function (transfer). Best corrected visual acuity. Results (1) there was no significant difference in corneal SA before and after operation (P 0.05, Coma). Total high order aherration. The change of BCVA before and after operation was similar to that of corneal SA. There was no significant difference in BCVA between the three groups under the pupil diameter of 3 mm. There was no significant difference in MTF t HOA and SR between the four groups of IOL eyes (P 0.05). There was no significant difference in total eye SA between group A and group B (P 0.05). However, there was no significant difference in corneal SA between group D and group D (P 0.05) under the pupil diameter of 5 mm. There was no significant difference among the three groups (P 0. 05%, P 0. 05%), but there was no significant difference among the three groups (P 0. 05%, P 0. 000, P 0. 000, P 0. 000, P 0. 000, P 0. 000, P 0. 000, P 0. 000, P 0. 000). The difference of MTF t HOA and SR in all eyes was statistically significant (P 0.05). There was no significant difference among the three groups (P 0.05). Conclusion there is no difference in high order aberration of cornea before and after phacoemulsification. There was no difference in visual quality between different SA designs for aspherical IOL eyes. Under the large pupil diameter, better visual quality could be obtained according to the individualized choice of preoperative SA than by random implantation of aspherical IOL eyes.
【作者单位】：昆明医科大学第二附属医院眼科;
【基金】：云南省应用基础研究面上项目(编号:2014FZ030)~~
【分类号】：R779.6
【正文快照】： 随着手术技术及人工晶状体(intraocular lens,IOL)的改良和发展,白内障患者对术后的视觉质量要求不再局限于“看得见”,而是要求持久舒适地“看清楚”。部分患者术后最佳矫正视力(best corrected visual acuity,BCVA)良好,但出现夜间视力差、光晕、眩光等症状,研究发现与像差

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