Visual quality of bilateral implantation of refractive and diffractive multifocal intraocular lens

AIM: To investigate the visual quality after phacoemulsification combined with customized implantation of refractive multifocal intraocular lens(Rezoom NXG1 MIOL)and diffractive multifocal intraocular lens(ReSTOR SA60D3 MIOL). METHODS: A prospective, nonrandomized, unmasked clinical trial was performed. Patients with age-related cataract who were to undergo phacoemulsification were divided into two groups: multifocal intraocular lens(MIOL)vs monofocal intraocular lens(SIOL). 10 patients were included in each group. In the group of MIOL, patients got implantation of ReZoom NXGl MIOL in the dominant eye and ReSTOR SA60D3 MIOL in the fellow eye while patients in the group of SIOL got implantation of Sensar AR40e IOL bilaterally. One month postoperatively, distance, mid-range and near visual acuity, contrast sensitivity, focal depth were measured. Satisfaction of visual quality was investigated by questionnaire. RESULTS: One month postoperatively, the patients in the MIOL group were satisfied with distance visual acuity, meanwhile they achieved better mid-range and near visual acuity compared with patients in the SIOL group. Under mesopia condition, SIOL implantation gave better contrast sensitivity in spatial frequency at 3 cpd, and no difference was observed in other spatial frequency, while under photopia condition, no significant difference was observed among all the five types of spatial frequency. The focal depth of MIOL was 5.30D, which was significantly higher than 2.85D of the SIOL. Satisfaction of visual quality of near and mid-range was significantly higher in the MIOL group. CONCLUSION: Customized implantation of intraocular lens after phacoemulsification provides better visual acuity and visual quality postoperatively.