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Related Experiment Videos

Multifocal intraocular lenses.

J L Pearce

    Current Opinion in Ophthalmology
    |January 7, 1997
    PubMed
    Summary
    This summary is machine-generated.

    Multifocal intraocular lenses (IOLs) offer excellent visual results and reduce spectacle dependence for many cataract patients. However, regulatory hurdles and cost disparities hinder wider adoption despite proven clinical data.

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    Area of Science:

    • Ophthalmology
    • Biomedical Engineering
    • Medical Devices

    Background:

    • A decade of multifocal intraocular lens (IOL) implantation has seen waning interest from the ophthalmic community.
    • Regulatory challenges, particularly shifting FDA approval criteria, have impeded the widespread adoption of multifocal IOL technology.
    • Despite clinical data, a perceived lack of commitment to this modality persists.

    Purpose of the Study:

    • To review existing refractive and diffractive multifocal IOL styles and their clinical outcomes.
    • To discuss the challenges and potential future directions for multifocal IOL technology.
    • To assess the suitability of multifocal IOLs for the broader cataract patient population.

    Main Methods:

    • Review of refractive and diffractive multifocal IOL designs from various manufacturers (Iolab, Stortz, Domilens, Amo, 3M, Pharmacia).

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  • Analysis of clinical reports on visual outcomes, including distance and near dominance.
  • Consideration of factors affecting patient satisfaction, such as contrast sensitivity and spectacle dependence.

    • Main Results:

    • Multifocal IOLs generally provide excellent visual results, with specific designs suited for distance or near vision.
    • The foldable Amo Array SA40N is noted as a viable distance-dominant option for small incision surgery.
    • Concerns remain regarding contrast sensitivity in low-light conditions and meeting specific visual standards for activities like night driving.

    Conclusions:

    • Spectacle dependence is significantly reduced with multifocal IOLs compared to monofocal IOLs.
    • Over 60% of cataract patients could benefit from multifocal IOLs, especially with small incision surgery.
    • Reducing the price disparity between multifocal and monofocal IOLs could increase their utilization.