Effect of postoperative residual astigmatism on visual outcomes after trifocal intraocular lens implantation

Purpose The aim of this study was to evaluate the effect residual astigmatism on postoperative visual outcomes after trifocal intraocular lens implantation. Methods In prospective observational study, we divided 156 eyes into two groups according measured by subjective optometry and followed them up for 3 months. Visual acuity, modulation transfer function (MTF) curves, Strehl ratio (SR), Function Index-14 scores, photic phenomena were compared. Results Linear regression analysis revealed a weak correlation between uncorrected distance acuity (UDVA) (r = 0.190, P 0.016) at months significant between-group difference 1- 3-month UDVA ( 0.038, 0.018, respectively). MTF curve values SR (MTF-10 total, MTF-10 cornea, MTF-30 Total, cornea) significantly worse < 0.001), scores lower in 0.5 ≤ 1.25 D group 0.05) than group. No differences found frequency, severity, bothersomeness > 0.05). Conclusion Postoperative affects lens-implanted eyes. Although no intermediate near both objective quality affected, suggesting need surgical planning when anticipated is >0.5 D.