RESUMO
206 Consecutive cataract patients were at random divided into three groups according to the way the cataract incision was closed: virgin silk 8-0, interrupted nylon 9-0, and double running nylon 9-0. The nylon, whether interrupted or continuous, yielded in the majority of cases a postoperative astigmatism with the rule, whereas virgin silk caused in nearly all patients a postoperative astigmatism against the rule and therefore behaved like an absorbable suture. Silk is chemically non-absorbable, but in virgin silk a natural worm-produced polymer is still present, which provokes a tissue reaction. Softening of tissue diminishes the tensile strength of the suture. With respect to the postoperative astigmatism, the suture material (nylon or virgin silk) seems a more important factor than the way in which it is used (interrupted or continuous).
Assuntos
Astigmatismo/etiologia , Extração de Catarata/efeitos adversos , Proteínas de Insetos , Técnicas de Sutura/efeitos adversos , Suturas/efeitos adversos , Idoso , Feminino , Seguimentos , Humanos , Masculino , Nylons/efeitos adversos , Proteínas/efeitos adversos , Distribuição Aleatória , Seda , Acuidade VisualRESUMO
Post Measles Blindness occurs in developing countries in 1% of all children with measles and is caused by the interaction of the three factors: measles, malnutrition and treatment. Prevention is to be achieved by an attack on each of these factors; immunisation against measles, improvement of the nutritional status and the application of eye ointment to children with measles are all needed in order to eradicate Post Measles Blindness.
Assuntos
Cegueira/etiologia , Sarampo/complicações , Distúrbios Nutricionais/complicações , Criança , Pré-Escolar , Conjuntivite/etiologia , Humanos , Ceratite/etiologia , Sarampo/diagnóstico , Sarampo/prevenção & controle , Vacina contra Sarampo/uso terapêutico , Medicina TradicionalAssuntos
Cegueira/etiologia , Doenças da Córnea/etiologia , Sarampo/complicações , Adolescente , Cegueira/epidemiologia , Criança , Pré-Escolar , Conjuntivite/etiologia , Córnea/ultraestrutura , Doenças da Córnea/patologia , Feminino , Humanos , Lactente , Quênia , Ceratite/etiologia , Masculino , Sarampo/epidemiologia , Microscopia EletrônicaRESUMO
In a study in Kenya of corneal lesions occurring in children with measles virus infection, conjunctival lesions of a characteristic appearance were seen concomitant with the rash. The lesions became visible after staining by Lissamine green or Rose Bengal. In order to investigate whether these lesions were virus-induced, paired biopsies were performed on the conjunctiva of five measles patients. One biopsy was taken of a staining lesion; the other one, taken of nonstaining conjunctiva of the same eye, served as control. Measles-specific immunofluorescence on cryostate sections of the biopsies showed that in all patients the antigen occurred in the conjunctival epithelial cell layer in the staining lesions only. The coincidence of epithelial staining and presence of measles antigen suggests a viral origin of the conjunctival lesion. Fluorescent antibody technique on cryostate sections proved to be a suitable method to demonstrate the presence of virus where isolation fails and serology is not applicable.
