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    What role does chromatic aberration play in IOLs?

     

    More studies needed

    Further studies are needed to understand the clinical significance of chromatic refractive differences. Low-contrast sensitivity and glare situations might be affected by LCA and chromatic refractive differences.

    The human visual system can tolerate a significant amount of monochromatic aberrations, but it is unclear how much LCA can be tolerated. Nevertheless, it has generally been the goal with refractive and/or cataract surgery to reduce—or at least not add to—those aberrations.

    In summary, chromatic aberration is a fundamental property of IOLs. Techniques and methods of measuring and assessing the clinical effects of LCA are still being developed, but this pair of studies represent important steps forward in characterizing LCA in pseudophakic lens materials.

     

    References:

    1.    Zhai Y, Wang Y, Wang Z, et al. Construction of special eye models for investigation of chromatic and higher-order aberrations of eyes. Biomet Mater Eng 2014;24(6):3073-81.

    2.    Zhao H, Mainster MA. The effect of chromatic dispersion on pseudophakic optical performance. Br J Ophthalmic 2007;91:1225-9.

    3.    Chang DH, Weeber HA, Lowery MD, Piers PA. Chromatic aberration of intraocular lenses measured in vitro and in vivo, ARVO 2016.

    4.    Terwee T, Weeber H, van der Mooren M, Piers P. Visualization of the retinal image in an eye model with spherical and aspheric, diffractive, and refractive multifocal intraocular lenses.  J Refract Surg 2008;24(3):223-32.

     

    Daniel H. Chang, MD

    P: 661-325-3937

    E: [email protected]

    Dr. Chang is in private practice at Empire Eye and Laser Center in Bakersfield, CA. He is a consultant to Abbott Medical Optics.

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