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Related Experiment Videos

ReSTOR diffractive versus Array 2 zonal-progressive multifocal intraocular lens: a contralateral comparison.

G Renieri1, S Kurz, A Schneider

  • 1Department of Ophthalmology, Johannes Gutenberg University, Mainz, Germany. renieri@augen.klinik.uni-mainz.de

European Journal of Ophthalmology
|October 13, 2007
PubMed
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The AcrySof ReSTOR diffractive multifocal intraocular lens (MIOL) demonstrated superior near vision performance compared to the Array 2 refractive MIOL after cataract surgery. Both lenses provided similar distance vision, with Array 2 showing a slight advantage in intermediate vision.

Area of Science:

  • Ophthalmology
  • Biomedical Engineering
  • Optics

Background:

  • Cataract surgery often involves intraocular lens (IOL) implantation to restore vision.
  • Multifocal intraocular lenses (MIOLs) aim to provide both distance and near vision, reducing spectacle dependence.
  • Comparing diffractive and refractive MIOL designs is crucial for optimizing visual outcomes.

Purpose of the Study:

  • To compare the visual performance of a diffractive MIOL (AcrySof ReSTOR) versus a refractive MIOL (Array 2) after bilateral cataract surgery.
  • To evaluate differences in uncorrected and corrected near visual acuity, distance visual acuity, and contrast sensitivity.

Main Methods:

  • A prospective, comparative trial involving 18 patients undergoing bilateral cataract surgery with asymmetric MIOL implantation.

Related Experiment Videos

  • Eighteen eyes received ReSTOR MIOL, and their fellow eyes received Array 2 MIOL.
  • Postoperative outcomes assessed at five months included visual acuities, contrast sensitivity with/without glare, and quality of vision via masked interviews.

    • Main Results:

    • Both MIOLs yielded similar postoperative distance visual acuities.
    • The ReSTOR diffractive MIOL showed significantly better uncorrected and distance-corrected near visual acuity (p=0.002, p=0.003).
    • The Array 2 refractive MIOL demonstrated a trend towards better intermediate visual acuity (p=0.058), with no significant differences in contrast sensitivity or glare disability. Severe photic phenomena were rare, occurring only in one eye with Array 2.

    Conclusions:

    • The diffractive ReSTOR MIOL offers superior near visual acuity compared to the refractive Array 2 MIOL.
    • The Array 2 MIOL shows a tendency for better intermediate vision.
    • Both MIOLs provide comparable distance vision, with minimal differences in contrast sensitivity and glare; photic phenomena are infrequent with both designs.