Intermediate Vision Enhancement: Bilateral Enhanced Monofocal vs Zonal Refractive Multifocal IOLs

To compare the visual quality and stereopsis after bilateral implantation of the zonal refractive multifocal intraocular lens (IOL) LS-313 MF15 (Oculentis) and enhanced monofocal IOL TECNIS Eyhance ICB00 (AMO).

In this retrospective case series at The Second Hospital of Jilin University, patients underwent bilateral phacoemulsification with implantation of either enhanced monofocal (Tecnis Eyhance ICB00) or zonal refractive (LS-313 MF15) IOLs. Postoperative evaluations at 3 months included visual quality and stereopsis parameters: uncorrected distance, intermediate, and near visual acuity; corrected distance visual acuity; defocus curves; higher order aberrations; Strehl ratio; modulation transfer function; stereoacuity with correlation analysis; Visual Function Index-14 (VF-14) score; and spectacle independence rate.

Sixty patients (120 eyes) were included, with 30 patients (60 eyes) per group completing follow-up assessments. At the 3-month follow-up visit, the LS-313 MF15 group showed superior near visual acuity and stereopsis versus the Eyhance ICB00, with stereopsis positively correlating with binocular near visual acuity. The LS-313 MF15 demonstrated smoother defocus curves, broader landing zones, and superior near vision performance versus the Eyhance ICB00. The LS-313 MF15 group demonstrated lower spherical aberration but higher coma, trefoil, and total higher order aberrations compared to the Eyhance ICB00 group. No statistically significant differences were observed between the two groups in SR, MTF curve area, VF-14 questionnaire scores, or spectacle independence rates.

For patients with intermediate-vision requirements, both IOLs represent viable options, whereas the LS-313 MF15 may be preferable for those requiring enhanced near vision and stereopsis. The Eyhance ICB00 appears more suitable for patients with suboptimal ocular conditions.