Comparison of visual quality after implantation of trifocal intraocular lenses with different diopter values in the two eyes: a retrospective study.

BACKGROUND: This study evaluated the postoperative visual quality of myopic patients with differences in the diopter of intraocular lens (IOL) implantation in both eyes. METHODS: This is a retrospective observational study, 62 patients received binocular AT LISA tri 839MP trifocal intraocular lens implantation in Lixiang Eye Hospital of Soochow University from September 2021 to June 2023 were included for analysis, 31 patients with IOL diopter value difference ≥ 1.0 D (study group) and 31 patients with IOL diopter value difference < 1.0 D (control group). The far intermediate, and near vison, modulation transfer function (MTF), Strehl ratio (SR), higher-order aberrations, pupil centroid shift from photopic to scotopic vision, tertiary visual function, spectacle independence, light disturbance phenomenon, overall satisfaction and quality of life and VF-11R scores in both groups were comparatively assessed 3 months after the surgery on the second eye. RESULTS: Postoperative visual acuity was significantly improved in both groups. There were no statistically significant differences in uncorrected distance visual acuity (UDVA) and uncorrected intermediate visual (UIVA) for both eyes and the right eyes between the two groups. There were also no statistically significant differences in UDVA, UIVA and for the left eyes between the two groups. uncorrected near visual acuity (UNVA) levels of both eyes and the right eyes, total ocular higher-order aberrations and trefoil aberrations were better in the control group than in the study group. There were no statistically significant differences in MTF, SR, simultaneous vision, fusion vision, coma, spherical aberration and VF-11R scores between the two groups. Stereopsis was improved in the control group versus the study group. The glare was better in the control group than in the study group. Night glare correlated with IOL diopter value difference. CONCLUSIONS: The spectacle independence rate reached 100% in both groups. There were no statistically significant differences in far and intermediate vision, simultaneous vision and fusion vision between the two groups. The study group had corrected anisometropia in both eyes, but stereopsis and near vision were inferior in these patients compared with the control group. Night glare correlated with binocular IOL diopter value difference.