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Lens material and formulation of multipurpose solutions affects contact lens di...

Purpose To assess the disinfection efficacy of multipurpose solutions (MPS) against different bacterial species adhered either to silicon hydrogel or to conventional hydrogel contact lenses (CLs). The influences of the MPS formulation and the chemical composition of the lens material were investigated. Methods This investigation followed the standard 14729, which establishes the guidelines for assessing CL dis...

The influence of lens material and lens wear on the removal and viability of st...

Purpose: The aim of this study was to evaluate the influence of lens material and lens wear on the removal capability of Staphylococcus epidermidis. Assessment of viability of remaining adhered bacteria was another goal of this work. Four silicone hydrogel materials (galyfilcon A, balafilcon A, lotrafilcon A, lotrafilcon B) and one conventional hydrogel material (etafilcon A) were assayed. Methods: Detachment s...

The effect of lens wear on refractive index of conventional hydrogel and silico...

Purpose: The purpose of this work was to evaluate the ability of four silicone-hydrogel contact lenses (galyfilcon A, balafilcon A, lotrafilcon A and lotrafilcon B) to retain their equilibrium water content before and after wear, through measurements of refractive index and compare with that of a conventional disposable hydrogel contact lens (etafilcon A). Methods: The refractive indices of 115 contact lenses w...

Changes in UVR-Visible transmittance induced by wear on silicone-hydrogel conta...

Comparative study of silicone-hydrogel contact lenses Surfaces before and after...

Purpose: The aim of this study was to analyze surface changes of three silicone-hydrogel contact lenses after daily wear. The lenses used in this study were balafilcon A, lotrafilcon B (both surface-treated), and galyfilcon A (non surface-treated). Methods: To understand how and where proteins, lipids, and other contaminants change contact lenses, surface roughness was assessed through Atomic Force Microscopy T...

Bacterial adhesion to worn silicone hydrogel contact lenses

Purpose. The aim of this study was to, firstly, investigate whether silicone-hydrogel contact lenses (CL) are more or less susceptible to bacterial adhesion than conventional ones and, secondly, assess the influence of lens wear in the extent of bacterial adhesion. Four silicone-hydrogel CL (galyfilcon A, balafilcon A, lotrafilcon A, and lotrafilcon B) and one conventional hydrogel (etafilcon A) CL were tested....

Microbial colonization of contact lenses, tear film deposition, bacterial adhes...

Tese de doutoramento em Engenharia Química e Biológica (ramo de conhecimento em Tecnologia Microbiana) ; Biomedical devices are susceptible of microbial contamination. Adhering bacteria to contact lenses (CLs) may induce ocular infections, being microbial keratitis (MK) the most sight threatening. The present Thesis investigates the role of surface properties and conditioning film on microbial colonization, ba...

Análise do erro médico em processos ético-profissionais: implicações na educaçã...

O objetivo deste trabalho é avaliar as características dos Processos Ético-Profissionais (PEP) com denúncia de infração por erro médico e discutir a importância da educação médica na sua prevenção. O principal artigo do Código de Ética Médica que caracteriza o erro médico é o artigo 29. Trata-se de um estudo descritivo em que foi feita uma revisão de todos os PEP julgados no Conselho Regional de Medicina do Est...

Estudo das propriedades e biodegradabilidade de blendas de poliéster/amido subm...

This work deals with the biodegradation of blends of poly(beta-hydroxybutyrate)/starch and poly(beta-hydroxybutyrate-co-hydroxyvalerate)/starch. The blends were obtained by evaporation of the solvent in the mixture of the polymers in chloroform. Tests were carried out in presence of micro-organisms which acted as biodegradation agents. The blends were consumed as carbon substrate and the production of CO2 was e...

Avaliação do estado nutricional e do desenvolvimento neuropsicomotor em criança...

OBJETIVO: Avaliar o estado nutricional e o desenvolvimento neuropsicomotor em crianças freqüentadoras de uma creche. MÉTODOS: Estudo transversal de 113 crianças com seis a 70 meses de idade, que freqüentavam a creche Irmã Sheila em Catanduva, São Paulo. A avaliação nutricional foi feita por antropometria e analisada pela classificação de Waterlow e a avaliação do desenvolvimento neuropsicomotor pelo Teste de De...