AIM: To observe the visual quality after implantation of regional refractive multifocal intraocular lens(MIOL)SBL-3.

METHODS: A retrospective and controlled study. Fifty-seven cataract patients(68 eyes)in our hospital from September 2019 to July 2020 were enrolled. Totally 33 cases(36 eyes)received regional refractive MIOL SBL-3(SBL-3 group), while 24 cases(32 eyes)received aspheric single focal intraocular lens(SIOL)ZCB00(ZCB00 group). Uncorrected and corrected distance, middle and near visual acuity, defocus curve, OPDⅢ objective visual quality, the quality of vision(QoV)questionnaire, patient satisfaction and spectacle independence were evaluated 3mo postoperatively.

RESULTS: No significant differences were found between the SBL-3 group and the ZCB00 group in terms of LogMAR value of corrected and uncorrected distance visual acuity(UDVA)at 3mo after the operation(0.13±0.09 vs 0.10±0.08, 0.06±0.06 vs 0.08±0.08, all P>0.05)and the UDVA was significantly improved compared with that before the operation(P<0.05). Corrected and uncorrected intermediate and near visual acuity were significantly better for the SBL-3 group than the ZCB00 group(0.10±0.14 vs 0.27±0.10, 0.05±0.16 vs 0.35±0.17, 0.11±0.14 vs 0.26±0.11, 0.03±0.17 vs 0.35±0.17, all P<0.05). Concerning the comparison of contrast sensitivity, the ZCB00 group was better than SBL-3 group at any spatial frequency evaluated and the differences were significant(all P<0.05). Statistically significant differences between groups were observed in intraocular total aberrations, high-order aberrations, coma and Trefoil presenting significantly higher values in the eyes of the SBL-3 group than in the ZCB00 group(P<0.05). The average Strehl ratio value was smaller in the ZCB00 group and the difference was statistically significant(P<0.05). There were 1 patient who had glare, 1 patient reported halo, 4 patients complained distance blur in the SBL-3 group at 3mo after the surgery. 82% and 88% were completely satisfied in the SBL-3 group and ZCB00 group, respectively. There was no statistically significant difference in satisfaction between the groups. SBL-3 group had a higher percentage of spectacle independence and the difference was significant(94% vs 67%, P<0.05).

CONCLUSION:The regional refractive MIOL SBL-3 provided good range of vision for near, intermediate, and distance. Although few vision phenomena were reported, it resulted in an excellent level of overall patient satisfaction and freedom from spectacles.