title: "Equator ring" for maintenance of the completely circular contour of the capsular bag equator after cataract removal.
abstract: We designed an "equator ring," a flexible silicone rod with a groove on its inner surface, to maintain the circular contour of the capsular bag equator after cataract removal. After cataract extraction, the ring is inserted in the bag through a 5.0-mm circular capsulorhexis or 4.5-mm linear "dumbbell" opening. Then a conventional posterior chamber intraocular lens (PC-IOL) is inserted, with the IOL loops in the groove. The ring not only allows complete maintenance of the circular contour of the capsular bag equator for most conventional PC-IOLs, but also may prevent invasion of metamorphosed lens epithelial cells into the posterior capsule.
authors.affiliation: Hara Eye Hospital, Utsunomiya, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Hara
authors.forename: T
authors.initials: T
authors.lastname: Hara
authors.forename: Y
authors.initials: Y
authors.lastname: Yamada
mesh_terms: D002387:Cataract Extraction / Q000295:instrumentation* / Q000379:methods; D006801:Humans; D007903:Lens Capsule, Crystalline; D007910:Lenses, Intraocular; D012828:Silicones
chemical_list: D012828:Silicones