The effect and comfortable after extended depth of focus, multifocal and monofocal intraocular lenses implantation

Abstract

Background: Premium intraocular lens (IOL) can provide a fixed distance of near vision, which may be affected for patients who prefer different near distances. Thus, this study evaluate the effects and comfortable after implantation of extended depth of focus (EDOF), multifocal (Multi) and monofocal (Mono) intraocular lenses (IOLs). Methods: Seventy eligibleparticipants were implanted with their preferred IOL and completed the relevant follow-up.Assessments focused on uncorrected distance, intermediate, and near visual acuity (UCDVA, UCIVA, and UCNVA, respectively), best corrected distance visual acuity (BCDVA), the fluctuations of comfortable near distance, the ability to see at comfortable or standard near distance and visual comfort during the 3-month postoperative follow-up. Results: The EDOF and Multi groups were followed up for 3 months and showed noninferiority to the Mono group in the UCDVA (P > 0.05) and BCDVA but superiority in the UCNVA (P < 0.001). The UCIVA was best in the EDOF group, with comparable vision in the Multi and Mono groups. The comfortable near distance in the three groups was nonsharp between the pre- and postoperative periods. The comfortable near-distance visual acuity (CNDVA) was lower than the UCNVA in the three groups, particularly for the EDOF and Multi recipients (P < 0.05). The comfortable near distance effectively improved patients’ near visual comfort and visual clarity, except for one patient in the Multi group who complained of severe fatigue and was unable to tolerate the experience at month 3. Conclusion: The EDOF and Multi IOLs achieved excellent visual quality and superior UCNVA versus the Mono IOL, but the CDNVA was significantly inferior to the UCNVA. Patients' near visual experience can be effectively increased at their comfortable near distances.