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4 result(s) for "enfermedad ocular"
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Comparing the fibrosis inhibition effect of bevacizumab, 5-fluorouracil, and mitomycin C in trabeculectomy in dogs with glaucoma: A series of six cases
Anamnesis: A descriptive series of six cases of dogs with glaucoma are presented comparing the fibrosis inhibition effect of three drugs used during trabeculectomy (TEC). Clinical findings: The patients were diagnosed with primary chronic closedangle glaucoma refractory to topical medical treatment with no pupillary light reflex and negative eyeblink response to threat and ocular pain. Therapeutic approach: Two patients received an intraoperative application of bevacizumab; two received 5fluorouracil; and two, mitomycin C. Intraocular pressure (IOP) and filtering ampoule were observed on days 1, 7, 30, 60, and 90 postsurgery. Results and conclusion: Bevacizumab regulated IOP under 25 mmHg, constituting the drug of choice for dogs with primary closedangle glaucoma without previous positive response to topical therapy and subjected to TEC, when compared with 5fluorouracil and MMC regarding the inhibitory effect of fibrosis.
Molecular characterization of bacterial microbiota associated with infectious bovine keratoconjunctivitis in Michoacán, Mexico
Background: The most common ocular disease affecting cattle worldwide is infectious bovine keratoconjunctivitis (IBK), which has been associated with Moraxella bovis bacterium. Objective: To report the molecular characterization of the ocular bacterial microbiota and its relation to IBK in cattle in two dairy regions in Michoacán, Mexico. Methods: A total population of 761 bovines were evaluated, of which 17 (2.23%) showed symptoms of IBK. Thirtyeight bacterial isolates from ocular samples of bovines with IBK were characterized by Gramstaining and antimicrobial sensitivity. In addition, isolates were identified by sequence comparisons of the 16S ribosomal gene. Results: The genus Moraxella was one of the most abundant bacteria and M. bovoculi was the most predominant species. Conclusion: The bacterial isolates identified in eye lesions of cattle and associated to IBK are diverse. To the author´s knowledge, this is the first study on the subject in Mexico; therefore, more research is needed to estimate the incidence of IBK and determine its associated microbiota.
Evaluation of recognition memory through oculomotorius behavior in Alzheimer disease
INTRODUCTION: The study of ocular movements in patients with Alzheimer disease is an useful tool to evaluate recognition memory. METHODS: assessment of this specific type of explicit memory in 15 individuals diagnosed with Alzheimer disease and 15 controls. The parameters of ocular fixation were examined using the Eye-Tracking Tobii Tx300 through Pair-wised ranking with the paradigm novel object recognition.  RESULTS: People with Alzheimer disease present difficulties in the recognition of previously presented stimulus when the latency of presentation of the familiarization and the test period is longer than two minutes.  DISCUSSION:  The analysis of oculomotorius behavior can simplify the evaluation of recognition memory without appealing to verbal report and the visual paired comparison task. This contributes to the comprehension of the relationship among spatial attention, working memory and episodic memory.  Introducción. el estudio de los movimientos oculares en pacientes con enfermedad de Alzheimer es una herramienta útil para evaluar la memoria de reconocimiento. Métodos. la evaluación de este tipo específico de memoria explícita en 15 individuos diagnosticados con la enfermedadde Alzheimer y 15 controles. Se examinaron los parámetros de fijación ocular utilizando el Eye-Tracking Tobii Tx300mediante clasificación por pares con el paradigma de reconocimiento de objetos novedosos. Discusión. El análisis del comportamiento oculomotor puede simplificar la evaluación de la memoria de reconocimiento sin apelar al informe verbal y a la tarea de comparación visual por pares. Esto contribuye a la comprensión de la relación entre atención espacial, memoria de trabajo y memoria episódica. Resultados. Las personas con enfermedad de Alzheimer presentan dificultades en el reconocimiento de estímulospreviamente presentados cuando la latencia de presentación de la familiarización y el período de prueba es superior a dos minutos.
A Systematic Review of Deep Learning Methods Applied to Ocular Images
La inteligencia artificial tiene un importante impacto en diversas áreas de la medicina, y la oftalmología no ha sido la excepción. En particular, los métodos de aprendizaje profundo han sido aplicados con éxito en la detección de signos clínicos y la clasificación de enfermedades oculares. Esto representa un impacto potencial en el incremento de pacientes correcta y oportunamente diagnosticados. En oftalmología, los métodos de aprendizaje profundo se han aplicado principalmente en imágenes de fondo de ojo y tomografia de coherencia óptica. Por un lado, estos métodos han logrado un rendimiento sobresaliente en la detección de enfermedades oculares tales como la retinopatía diabética, el glaucoma, la degeneración macular diabética y la degeneración macular relacionada con la edad. Por otro lado, varios desafíos mundiales han compartido grandes conjuntos de datos con segmentación de parte de los ojos, signos clínicos y el diagnóstico ocular realizado por expertos. Adicionalmente, estos métodos han venido rompiendo el estigma de los modelos de caja negra, proveyendo información clínica interpretable. Esta revisión proporciona una visión general de los métodos de aprendizaje profundo de última generación utilizados en imágenes oftálmicas, bases de datos y posibles desafíos para los diagnósticos oculares.