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Related Experiment Video

Updated: Jul 5, 2026

Correction of Presbyopia by Monocular Bi-Aspheric Ablation Profile

Published on: September 20, 2024

Wavefront-guided excimer laser vision correction after multifocal IOL implantation.

Bettina B Jendritza¹, Michael C Knorz, Steve Morton

¹FreeVis LASIK Center, University of Heidelberg, Medical Faculty Mannheim, Germany. bjendritza@freevis.de

Journal of Refractive Surgery (Thorofare, N.J. : 1995)

|April 18, 2008

Summary

Wavefront-guided LASIK effectively corrects residual refractive errors after diffractive multifocal intraocular lens (IOL) implantation. However, it does not improve higher-order aberrations and is not recommended for refractive multifocal IOLs due to measurement inaccuracies.

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Last Updated: Jul 5, 2026

Correction of Presbyopia by Monocular Bi-Aspheric Ablation Profile

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$Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter$

Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter

Published on: September 16, 2025

Area of Science:

Ophthalmology and Optometry
Laser Vision Correction
Intraocular Lens Technology

Background:

Multifocal intraocular lenses (IOLs) are implanted to address refractive errors and presbyopia.
Residual refractive errors and higher-order aberrations (HOAs) can occur post-IOL implantation, impacting visual quality.
Wavefront-guided LASIK (WFG-LASIK) is a potential surgical option to refine vision after IOLs.

Purpose of the Study:

To evaluate the efficacy and safety of wavefront-guided LASIK for correcting residual ametropia and HOAs after multifocal IOL implantation.
To assess the outcomes of WFG-LASIK in eyes with different types of multifocal IOLs (diffractive and refractive).

Main Methods:

A prospective, nonrandomized case series involving 27 eyes (19 patients) who underwent WFG-LASIK.
Patients had previously received Tecnis, ReSTOR (diffractive), or ReZoom (refractive) multifocal IOLs.
Visual acuity (distance and near UCVA, BSCVA), manifest refraction, and wavefront error were analyzed pre- and post-operatively.

Main Results:

WFG-LASIK significantly corrected residual sphere and cylinder in eyes with diffractive IOLs (Tecnis and ReSTOR), improving uncorrected visual acuity.
Distance and near best spectacle-corrected visual acuity (BSCVA) remained unchanged in the Tecnis and ReSTOR groups post-LASIK.
In the ReZoom (refractive IOL) group, WFG-LASIK resulted in a loss of BSCVA for both distance and near vision, and HOAs did not improve.

Conclusions:

Wavefront-guided LASIK is a safe and effective procedure for correcting residual refractive errors in eyes with diffractive multifocal IOLs.
WFG-LASIK did not lead to an improvement in higher-order aberrations in eyes with diffractive IOLs.
The procedure is not recommended for refractive multifocal IOLs due to unreliable wavefront measurements with current technology.