RESUMO
ABSTRACT The authors describe an unusual association between posterior keratoconus and iris atrophy, confirmed by a complete ocular evaluation, scheimpflug imaging and pachymetric curve. A hypothesis for concomitant findings is discussed.
RESUMO Os autores descrevem a rara associação entre ceratocone posterior e atrofia de íris, confirmada por avaliação oftalmológica completa, imagens de scheimpflug e curva paquimétrica. Sugere-se uma hipótese que explique a concomitância de ambas as alterações.
Assuntos
Humanos , Feminino , Pessoa de Meia-Idade , Iris/patologia , Doenças da Íris/complicações , Ceratocone/complicações , Astigmatismo/complicações , Astigmatismo/patologia , Atrofia , Ambliopia/complicações , Ambliopia/patologia , Topografia da Córnea/métodos , Paquimetria Corneana/métodos , Ceratocone/patologiaRESUMO
The authors describe an unusual association between posterior keratoconus and iris atrophy, confirmed by a complete ocular evaluation, scheimpflug imaging and pachymetric curve. A hypothesis for concomitant findings is discussed.
Assuntos
Doenças da Íris/complicações , Iris/patologia , Ceratocone/complicações , Ambliopia/complicações , Ambliopia/patologia , Astigmatismo/complicações , Astigmatismo/patologia , Atrofia , Paquimetria Corneana/métodos , Topografia da Córnea/métodos , Feminino , Humanos , Ceratocone/patologia , Pessoa de Meia-IdadeRESUMO
Several strains of free-living amoebae belonging to the genus Acanthamoeba can cause a painful sight-threatening disease of the cornea known as Acanthamoeba keratitis (AK). The numbers of AK cases keep rising worldwide mainly due to an increase in contact lens wearers and lack of hygiene in the maintenance of contact lenses and their cases. We report a case of AK in a healthy young woman admitted to the Hospital de Clinicas in Porto Alegre, southern Brazil. Corneal scrapings were examined for the presence of Acanthamoeba strains. The initial isolate was characterized by morphological and genotypic properties. The isolate belonged to group III according to Pussard and Pons' cyst morphology. Analysis of its 18S rDNA sequence identified the isolate as genotype T4. The T4 genotype is the most commonly reported among keratitis isolates and the most common in environmental samples.