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Visual and optical performance with two different diffractive multifocal intraocular lenses compared to a monofocal
Jorge L Alió1, David P Piñero, Ana B Plaza-Puche
1Instituto Oftalmologico de Alicante, Vissum Corporation, Alicante, Spain. jlalio@vissum.com
Journal of Refractive Surgery (Thorofare, N.J. : 1995)
|January 8, 2011
Summary
This study compared monofocal and multifocal intraocular lenses (IOLs) after cataract surgery. Both multifocal IOLs (AcrySof ReSTOR and Acri.Lisa) improved near vision, with Acri.Lisa showing better optical performance.
Area of Science:
- Ophthalmology
- Biomedical Engineering
- Optics
Background:
- Cataract surgery often requires visual correction post-operation.
- Intraocular lenses (IOLs) are implanted to restore vision.
- Multifocal IOLs aim to provide both distance and near vision.
Purpose of the Study:
- To compare visual acuity and optical performance of monofocal versus two types of diffractive multifocal IOLs.
- Evaluate outcomes of AcrySof ReSTOR SN6AD3 and Acri.Lisa 366D IOLs against a standard monofocal IOL.
- Assess the impact of IOL type on ocular optical quality and aberrations.
Main Methods:
- A comparative study involving 102 eyes from 51 bilateral cataract patients.
- Eyes were implanted with either a monofocal IOL, AcrySof ReSTOR SN6AD3, or Acri.Lisa 366D IOL.
- Pre- and postoperative visual acuity, contrast sensitivity, ocular optical quality, and intraocular aberrations were measured.
Main Results:
- All IOL groups showed significant improvement in distance and near visual acuity.
- Multifocal IOLs (ReSTOR and Acri.Lisa) provided significantly better uncorrected near visual acuity than monofocal IOLs.
- Acri.Lisa IOL group demonstrated superior ocular optical quality, indicated by higher Strehl ratio and modulation transfer function.
Conclusions:
- AcrySof ReSTOR and Acri.Lisa 366D IOLs effectively restore near and intermediate vision after cataract surgery.
- The Acri.Lisa IOL design appears to offer enhanced optical performance.
- Further validation through a randomized, prospective trial is recommended.
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