三种非球面单焦点丙烯酸酯IOL植入术后暗视下视觉质量的观察

目的: 研究三种非球面丙烯酸酯人工晶状体(intraocularlens,IOL)植入术后患者在最佳矫正视力及暗视下(3cd/m2)对比敏感度(contrast sensitivity,CS)的变化,评价白内障超声乳化联合单焦点非球面丙烯酸酯IOL植入术后患者的视觉质量。方法: 选取符合条件的年龄相关性白内障患者77例90眼,2011-12/2012-11于我院行白内障超声乳化吸除联合IOL植入术,术前将患者随机分成三组,1组(25例30眼)植入疏水性染黄色丙烯酸酯IOL(HOYA),2组(28例30眼)植入亲水性丙烯酸酯IOL(Rayner)及3组(24例30眼)植入亲水性丙烯酸酯表面肝素处理IOL(XO)。所有患者于术后1,3mo均行最佳矫正视力(标准对数视力表)检查及暗视无眩光状态下的CS检查,所得结果进行统计学分析。结果: 患者术后1,3mo时,各组之间最佳矫正视力无明显统计学差异(P>0.05);患者1,3mo暗视无眩光状态下CS结果(标准化后的CS值:lgCS),三组患者之间CS值并无统计学差异(各组之间P>0.05),但HOYA组患者CS结果略下降。结论: 三组患者之间,术后1,3mo时最佳矫正视力及对暗视无眩光状态下CS结果无明显差异(P>0.05)。由于蓝光滤过型IOL对视网膜的潜在保护作用,因此植入染黄色滤过蓝光的IOL是可取的,特别是对儿童及青年白内障患者是必要的。

Mesopic visual quality after three kinds of aspheric acrylic monofocal intraocular lenses

AIM:To evaluate best corrected visual acuity(BCVA)and contrast sensitivity(CS)under mesopic condition with no glare in patients following implantation of three different kinds of aspheric acrylic monofocal intraocular lens(IOLs).

METHODS: Seventy-seven cases(90 eyes)of age-related cataract patients were selected, who were undergone phacoemulsification and intraocular lens(IOL)implantation in our hospital during December 2011 to November 2012. Preoperatively, the patients were randomly divided into three groups: 30 eyes(25 cases)were implanted with hydrophobic yellow-tinted acrylic(HOYA)IOLs in group 1; 30 eyes(28 cases)with hydrophilic acrylic IOLs(Rayner)in group 2; 30 eyes(24 cases)with hydrophilic acrylic surface heparin processing IOLs(XO)in group 3. All eyes were evaluated at 1 month and 3 months postoperatively. The BCVA and CS under mesopic condition without glare were measured and underwent statistical analysis.

RESULTS: There was neither statistically significant difference in the BCVA(P>0.05), nor statistically significant difference in CS results(after standardization of contrast sensitivity value: lgCS)(P>0.05)between groups under mesopic condition, but the lgCS of the HOYA group decreased slightly.

CONCLUSION: There were not marked differences of BCVA and CS between groups of patients at the follow-up intervals of 1 month and 3 months under mesopic condition. The blue-filter type artificial lens may protect the retina, thus, it is advisable to implant yellow-tinted filter blue artificial lens, especially for patients who are children or young persons.