[The study of long-term curative effect of array multifocal intraocular lens after phacoemulsification]

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.

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.

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).

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.