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Related Experiment Video

Updated: Jul 11, 2026

Correction of Presbyopia by Monocular Bi-Aspheric Ablation Profile

Published on: September 20, 2024

[Phakic intraocular lens for presbyopia correction].

Caroline Amaral Ferraz¹, Norma Allemann, Wallace Chamon

¹Departamento de Oftalmologia, Universidade Federal de São Paulo, São Paulo, SP, Brasil. carolferraz@oftalmo.epm.br

Arquivos Brasileiros De Oftalmologia

|October 2, 2007

Summary

The Newlife multifocal intraocular lens improved uncorrected vision for presbyopia correction. However, safety criteria including endothelial cell count and complications were not met, indicating potential risks.

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Area of Science:

Ophthalmology
Biomedical Engineering

Context:

Presbyopia correction is a growing field in ophthalmology.
Phakic intraocular lenses offer an alternative to refractive surgery or lens replacement.
Multifocal intraocular lenses aim to provide both distance and near vision.

Purpose:

To assess the clinical and refractive outcomes of the Newlife anterior chamber multifocal phakic intraocular lens for presbyopia.
To evaluate the safety of this intraocular lens by examining visual acuity, endothelial cell count, and complication rates.

Summary:

A retrospective analysis of 30 patients (51 eyes) receiving the Newlife lens showed improved uncorrected visual acuity and refractive outcomes.
87.5% achieved J2 or better near vision without correction.
Endothelial cell loss was 7.57%, and 11.5% of lenses were explanted, primarily due to cataracts.

Impact:

The Newlife lens demonstrates potential for improving uncorrected vision in presbyopia patients.
However, the study raises concerns regarding the long-term safety profile, particularly endothelial cell health and explantation rates.
Further research is needed to optimize safety and efficacy.