Comparative analysis of lens stability and visual quality with α angle customized implantation of asymmetric segmental refractive multifocal intraocular lens SBL-3
Objective To analyze lens rotation stability and vision after implantation of asymmetric segmental re-fractive multifocal intraocular lens SBL-3(SBL-3 Mf-IOL)according to α angle.Methods Retrospectively collected 67 pa-tients who underwent phacoemulsification with SBL-3 Mf-IOL implantation from January 2021 to April 2022.The α angle and postoperative IOL rotation were measured by OPD Scan Ⅲ.According tated to ensure that visual axis avoid falling into transition zones.The vision of uncorrected distance visual acuity(UDVA)and uncorrected to α angle,the near zone of lens was ronear visual acuity(UNVA),4 mm range modulation transfer function(MTF)for preoperative and postoperative were were analyzed.Results 100%eyes avoid visual axis falling into transition zones,rotation postoperative data of one day,at one month and three months had no significant difference.There were statistically significant increased in UDNA,UNVA and MTF at most locations(P<0.05).Conclusions The method of SBL-3 Mf-IOL implantation according to α angle can largely avoid visual axis falling into transition zones,obtain good postoperative vision and IOL rotation stability.