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    Dislocation main reason for IOL explantations, survey finds

    Take-home: For 18 years the ASCRS and ESCRS have surveyed their members about the reasons for explantation of intraocular lenses. Looking at the trends and using the information gathered can be helpful in avoiding complications and improving patient outcomes.

    The most common complication associated with the explantation of foldable intraocular lenses (IOLs) is lens dislocation or decentration. While glare and visual aberrations are the most common reasons for explanting multifocal lenses.

    These observations were the main trends drawn from the “American Society of Cataract and Refractive Surgery/European Society of Cataract and Refractive Surgeons Survey on Foldable IOLs Requiring Explantation or Secondary Intervention.” Nick Mamalis, MD, professor of ophthalmology, University of Utah, Salt Lake City, outlined survey results, which is in its 18th year.

    The survey looks at why the lenses are being explanted and what trends can be seen, and what signs, symptoms, or complaints lead to explantation, or to the exchange of an IOL. What are the actual complications requiring the lens to be removed?

    Several types of IOL designs were included:

    • one-piece plate lenses;

    • one-piece lenses with haptics;

    • three-piece lenses;

    • multifocal lenses;

    • accommodating lenses.


    And different types of material:

    • silicone;

    • acrylic (hydrophobic);

    • hydrogel (hydrophilic acrylic;

    • collamer.

    Dr. Mamalis said there was a broad array of explants reported in the survey. The survey is not intended to say one lens is better than another, but instead to understand why IOLs need to be explanted, and look at trends that emerge to understand further the reasons for explantation of lenses.

    Lens type results

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