• Photograph courtesy of Kenneth J. Hoffer, MD; all illustrations redrawn by C. H. Wooley.
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    Cataract/Anterior Segment, Refractive Mgmt/Intervention

    Multifocal IOLs. A, Hoffer split bifocal IOL (left) and photograph of a lens implanted in a patient in 1984 (right). B, Bullet bifocal IOL. C, Three-zone multifocal design. D, Multifocal IOL with several annular zones. E, Diffractive multifocal IOL; the cross section of the central portion is magnified (the depth of the grooves is exaggerated).