多焦点人工晶状体植入术后远期疗效的观察

目的:比较以Array(AMO)为代表的多焦点人工晶状体与以AcrySof(Alcon)为代表的单焦点人工晶状体术后远期视力及对比敏感度的改变,以评价多焦点人工晶状体的有效性和安全性。方法:多焦点人工晶状体组15例30只眼,单焦点人工晶状体组15例30只眼,随访时间均为术后3个月以上;随访时均检查视力、矫正视力及最佳矫正视力下的对比敏感度。结果:多焦点人工晶状体组的矫正远视力和矫正近视力与单焦点人工晶状体组者均无明显差异(P>0.05),非矫正远视力、非矫正近视力优于单焦点人工晶状体组,两者间差异有统计学意义(P<0.05)。在昼视、昼光、暗视、暗光下,多焦点人工晶状体组3周/度(cycleperdegree,CPD)、6CPD、12CPD频率段的对比敏感度值与单焦点人工晶状体组者均无明显差异(P>0.05),在昼视状态下18CPD频率段的对比敏感度值较单焦点人工晶状体降低,差异有统计学意义(P<0.05)。结论:植入多焦点人工晶状体者术后远期较单焦点人工晶状体者能提供良好的远近视力,且对比敏感度值仅在高频率段低于单焦点人工晶状体。

The Study of Long-term Curative Effect of Array Multifocal Intraocular Lens after Phacoemulsification

PURPOSE: To compare the long-term curative effect of multifocal intraocular lens Array (AMO) with conventional monofocal intraocular lens AcrySof (Alcon) on functional visual performance, and to evaluate the safety and the effectiveness of the multifocal intraocular lens. METHODS: 30 cases (60 eyes) after the phacoemulsification with IOL implantation were included. Patients presented for cataract surgery were randomized to receive either Array (AMO) intraocular lens or the AcrySof (Alcon). 15 cases (30 eyes) of multifocal intraocular lens implantation were enrolled at investigational sites. 15 cases (30 eyes) of monofocal intraocular lens implantation were enrolled in a control ground. All the patients were followed up for more than 3 months post operatively. Patients were examined uncorrected distant visual acuity (UCDVA), best corrected distant visual acuity (BCDVA), uncorrected near visual acuity (UCNVA), best corrected near visual acuity (BCNVA), contrast sensitivity (CS) in the best corrected. Contrast sensitivity testing served as the principal outcome measure. All of these people with ocular pathology other than other disease known to affect contrast sensitivity were excluded. All of these people were 50-80 years old. The contrast sensitivity function was measured by one person. RESULTS: There was no significant difference about BCDVA and BCNVA between two groups (P > 0.05). UCNVA and UCDVA in multifocal intraocular lens group were better than control group (P < 0.05). Postoperative contrast sensitivity testing revealed no statistical significance in 3CPD, 6CPD, 12CPD between two groups (P > 0.05). In 18 CPD, multifocal intraocular lens group were worse than control group (P < 0.05). CONCLUSIONS: Long term curative effect shows that multifocal intraocular lens can offer better visual sight.Contrast sensitivity in two groups has no difference except in 18 CPD.