ESCRS - FP29.04 - Performance Of A New Extended Depth Of Focus Approach Optimized For Intermediate And Near Vision. Optical Bench Analysis

Performance Of A New Extended Depth Of Focus Approach Optimized For Intermediate And Near Vision. Optical Bench Analysis

Published 2024 - 42nd Congress of the ESCRS

Reference: FP29.04 | Type: Free paper | DOI: 10.82333/dmkw-9874

Authors: Alejandro Cerviño* 1 , Yi-Feng Chiu 2 , Chuan-Hui Yang 2 , Wen-Chu Tseng 2 , Ana Hervás-Ontiveros 3 , William Lee 4

1Optics & Optometry & Vision Sciences,University of Valencia,Burjassot,Spain, 2ICares Medicus, Inc,Zhubei,Taiwan, Province of China, 3Ophthalmology,Hospital Universitario y Politécnico La Fé,Valencia,Spain, 4AST Products, Inc,Billerica,United States;ICares Medicus, Inc,Zhubei,Taiwan, Province of China

Purpose

To describe the performance of a new refractive design intraocular lens for the correction of presbyopia, Asqelio™ PairedFocus™ (AST VisionCare, Inc., Billerica, MA), that aims to provide good visual performance at distance and at a range from 60 to 30cm using posterior surface Phase Ring Technology.

Setting

Department of Optics & Optometry & Vision Sciences. University of Valencia, Spain

Methods

The modulation transfer function (MTF) curves, the through-focus MTF curves, and the Strehl ratios were measured at different pupil apertures using a PMTF optical bench (Lambda-X Ophthalmics, Belgium) and its performance compared against the Asqelio™ EDOF extended depth of focus IOL.

Results

The MTF through focus analysis revealed a shift in the depth of focus from far and intermediate to intermediate and near distances compared to an EDOF IOL. Despite this shift, the Asqelio™ PairedFocus™ IOL maintained good MTF for distance vision. The new phase ring design effectively extended the focus range to cover vergences from 1.5D to 3D while preserving performance at distance.

Conclusions

The Asqelio™ PairedFocus™ Intraocular Lens demonstrates favorable performance characteristics, with enhanced near vision while maintaining good distance vision. These findings indicate promising outcomes for improving near performance with a refractive extended depth of focus approach for presbyopia correction.