Pupil influence on the quality of vision in rotationally asymmetric multifocal IOLs with surface-embedded near segment

摘要

Purpose To evaluate the influences of preoperative pupil parameters on the visual outcomes of the SBL-3, a rotationally asymmetric multifocal intraocular lens (IOL) with a surface-embedded near segment. Setting Cathedral Eye Clinic, Belfast, Northern Ireland, United Kingdom. Design Retrospective comparative case series. Methods Postoperatively, patients divided into 4 groups according to their pupil size as follows: Group A: 2.50 to 2.99爉m, Group B: 3.00 to 3.50爉m, Group C: 3.51 to 4.00爉m, and Group D: 4.01 to 4.50爉m. The uncorrected distance (UDVA), intermediate (UIVA), and near (UNVA) visual acuities, IOL centration and tilt, and quality of vision (QoV) questionnaires were compared between the 4 groups for 18爉onths postoperatively. Results The study comprised 90 patients (180 eyes). The mean preoperative pupil (photopic and mesopic) diameter was 4.3爉m牨?.3 (SD) and 5.6牨?.4爉m, respectively, which decreased to 3.8牨?.7爉m and 4.9牨?.2爉m, respectively, at 18爉onths. Eighteen months postoperatively, both photopic and mesopic pupil groups had a statistically significant reduction in size from preoperative levels. No significant differences in UDVA, UIVA, and UNVA were found between the groups ( P ??001). Significant differences in the QoV questionnaire day scores and night scores were found between the 4 groups ( P ?Conclusions The rotationally asymmetric multifocal IOL provided excellent optical performance during 18-months follow-up. The preoperative photopic pupil is an important parameter for consideration of this type of IOL because smaller pupils have a significant negative subjective impact on QoV.