ESCRS - FP05.13 - Visual Outcomes Following Implantation Of A Novel Non-Diffractive Wavefront-Linking Extended Depth Of Focus Intraocular Lens

Visual Outcomes Following Implantation Of A Novel Non-Diffractive Wavefront-Linking Extended Depth Of Focus Intraocular Lens

Published 2025 - 43rd Congress of the ESCRS

Reference: FP05.13 | Type: Free paper | DOI: 10.82333/c7mz-9z92

Authors: Byunghoon Chung 1 , David Kang* 1 , Kangyoon Kim 1 , Samuel Arba Mosquera 2 , Tae-im Kim 3

1Eyereum Eye Clinic,Seoul,Korea, Republic Of, 2R&D / Biomedical Engineering,SCHWIND eye-tech-solutions GmbH,Kleinostheim,Germany, 3Ophthalmology,Yonsei University College of Medicine,Seoul,Korea, Republic Of

Purpose

To evaluate the clinical outcomes following bilateral implantation of the Bi-Flex ELON intraocular lens (IOL) which utilises a series of central concentric refractive zones with varying curvatures to extend the depth of focus.

Setting

LEC Eye Centre, Ipoh, Malaysia

Methods

Prospective interventional case series of patients with bilateral significant cataracts  undergoing cataract surgery and implantation of ELON. Dominant eyes were targeted at emmetropia and non-dominant eyes at -0.75D. Primary endpoints were binocular uncorrected distance (UDVA), intermediate (UIVA at 66cm) and near (UNVA at 40cm) visual acuities at 3 months. Secondary outcomes were best corrected distance (CDVA), distance corrected intermediate (DCIVA) and distance corrected near (DCNVA) visual acuities as well as refractive predictability, binocular defocus curve, contrast sensitivity, Patient Reported Spectacle Independence (PRSIQ), Dysphotopsia and VF-14 questionnaire scores.

Results

30 patients (60 eyes) underwent phacoemulsification by a single surgeon and 3 month outcomes are reported. The mean binocular logMAR UDVA, UIVA and UNVA were 0.03+0.07, 0.14+0.14 and 0.22+0.13 respectively. The mean binocular logMAR CDVA, DCIVA and DCNVA were 0.01+0.04, 0.14+0.12 and 0.30+0.17 respectively. The mean refractive spherical equivalent (MRSE) was -0.02+0.47 with all eyes within 1D of target refraction. No patient required glasses for distant or intermediate vision and 10 patients needed glasses for near vision some of the time. 87.5%, 76.9% and 75% of patients who reported haloes, starbursts and glare respectively were not bothered by them. The mean VF-14 score was 94.8 with 8 patients reporting a maximum score of 100.

Conclusions

Bilateral implantation of the ELON intraocular lens demonstrated excellent binocular distant and intermediate vision with good functional near vision at 3 months. High levels of spectacle independence and patient satisfaction scores were achieved with most patients not bothered by photic phenomena.