Objective: To evaluate the visual outcome of +3.00 D aspheric intraocular lens (IOL) implantation and compare it with the previous +4.00 D aspheric AcrySof ReSTOR multifocal IOL.
Method: It was a case-control study. Sixty patients (120 eyes) from the Tianjin Medical University Eye Center between Jan. 2009 and Dec. 2010 were enrolled into two groups. Twenty patients were assigned to each group respectively. Parameters analyzed included contrast sensitivity, distance uncorrected and best-corrected visual acuity, distance corrected near visual acuity, intermediate visual acuity (60 cm) under bright light condition (100 cd/m(2)) and dim light condition (6 cd/m(2)), through-focus measurement, spectacle independence survey 6 months after second-eye surgery. Independent-samples t tests were used to statistically analyze.
Results: In the +3.00D ReSTOR group, LogMAR visual acuity in bright (dim) light was 0.10 (0.24), 0.24 (0.41), 0.14 (0.41) at distant, intermediate and near distance, respectively. While in the +4.00 D ReSTOR group, it was 0.09 (0.23), 0.42 (0.48), 0.15 (0.36), respectively. There was significant difference at intermediate vision between these two groups (P = 0.001). The best near distance was approximately 7 cm out in the +3.00 D IOL group. The percentages of patients not wore glasses for daily activities in +3.00 D and +4.00 D ReSTOR groups were 76% (23/30) and 73% (22/30), respectively. No significant visual interference problems were noted in both groups.
Conclusion: The +3.00 D aspheric AcrySof ReSTOR IOL achieves a more satisfactory intermediate distance vision when compared with the +4.00 D aspheric IOL.