Upside-down lens syndrome: ocular complications secondary to inverted implantation of the Kelman Multiflex anterior chamber intraocular lens.

ABSTRACT

PURPOSE: To describe ocular complications resulting from inverted insertion of a Kelman Multiflex anterior chamber intraocular lens (ACIOL). DESIGN: Retrospective observational case series. METHODS: We describe the outcomes of 4 cases of complicated cataract surgery in which a flexible open-loop polymethylmethacrylate (PMMA) ACIOL (Kelman Multiflex type) was placed in an inverted configuration, all of which were referred to a single institution. RESULTS: In all 4 cases, the placement of an inverted ACIOL resulted in ocular complications including chronic iritis, cystoid macular edema, pupil capture, iris adhesions, and corneal decompensation. CONCLUSIONS: Inadvertent inverted placement of the Kelman Multiflex anterior chamber intraocular lenses can lead to a constellation of severe ocular complications. When inserting such lenses, the surgeon should ensure that the lens is correctly oriented such that the optic vaults anteriorly and not posteriorly.