RESUMO
PURPOSE: To determine the effect of intraocular lens (IOL) type and anterior capsulectomy technique on the incidence of posterior capsule opacification. SETTING: Department of Ophthalmology, Medical Faculty, University of Ondokuz Mayis, Samsun, Turkey. METHODS: Three hundred two eyes of 294 patients were examined retrospectively after IOL implantation in the capsular bag performed between February 1991 and November 1996. Patients were divided into 3 groups according to IOL type: poly(methyl methacrylate) (PMMA); heparin-surface-modified PMMA (HSM PMMA); plate-haptic silicone. Envelope capsulectomy or continuous curvilinear capsulorhexis (CCC) was used. Mean follow-up was 27 months (range 12 to 33 months). RESULTS: Posterior capsule opacification developed in 47 cases (15.6%): 21.7% in the PMMA lens group after planned extracapsular cataract extraction (ECCE), 17.4% in the HSM PMMA lens group after planned ECCE, and 7.7% in the plate-haptic silicone lens group after phacoemulsification. Posterior capsule opacification occurred less in patients who had anterior capsulectomy using the CCC technique (11.5%) than in those having an envelope capsulectomy (24.5%) (P < .05). Posterior capsule opacification was significantly less in eyes with a capsular-bag-fixated plate-haptic silicone lens than in those with a PMMA or HSM PMMA IOL (P < .05). CONCLUSION: This study demonstrated that the anterior capsulectomy technique and the IOL type influence the incidence of PCO.
Assuntos
Capsulorrexe/efeitos adversos , Catarata/etiologia , Cápsula do Cristalino/patologia , Lentes Intraoculares/efeitos adversos , Idoso , Capsulorrexe/métodos , Catarata/patologia , Materiais Revestidos Biocompatíveis , Feminino , Seguimentos , Humanos , Incidência , Implante de Lente Intraocular , Masculino , Pessoa de Meia-Idade , Polimetil Metacrilato , Estudos Retrospectivos , Elastômeros de Silicone , Acuidade VisualAssuntos
Ambliopia/prevenção & controle , Extração de Catarata/métodos , Catarata/etiologia , Traumatismos Oculares/complicações , Terapia a Laser/métodos , Lentes Intraoculares , Ferimentos Penetrantes/complicações , Pré-Escolar , Traumatismos Oculares/cirurgia , Humanos , Masculino , Ferimentos Penetrantes/cirurgiaRESUMO
Ultrasonography and computerized tomography (CT) of the painful and blind right eye of a 13-year-old girl showed a cystic mass almost filling the vitreous cavity and narrowing the anterior chamber. The histopathologic diagnosis of the enucleated eye was an echinococcus cyst. Abdominal ultrasonography, brain CT and chest X-rays gave no abnormal findings when first examined, nor during the follow-up 18 months after surgery. Indirect hemagglutination test was negative at the last control. The case was accepted as a primary hydatid cyst (echinococcosis) of the eyeball.