Fundus Camera
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Uso de retinógrafo portátil como ferramenta no rastreamento de retinopatia diabética
Resumo Objetivo: Determinar a concordância do retinógrafo portátil Pictor Plus, na ausência de midríase, com a retinografia digital e avaliar a sua acurácia como método de rastreio da retinopatia diabética (RD). Métodos: Estudo transversal, mascarado para o observador, avaliando 100 olhos de 51 pacientes diabéticos. Foram realizadas retinografia
Rev. bras.oftalmol.. Publicado em: 04/11/2019
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2. Evaluation of fundus autofluorescence ımaging of diabetic patients without retinopathy
RESUMO Objetivo: Avaliar a utilidade da autofluorescência do fundo de olho de pacientes diabéticos sem retinopatia para investigar lesões precoces na retina. Métodos: Imagens de autofluorescência do fundo de olho de pacientes com diabetes mellitus do tipo 2 sem retinopatia (grupo diabético) e indivíduos saudáveis pareados por idade e sexo (grupo co
Arq. Bras. Oftalmol.. Publicado em: 27/06/2019
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3. The effect of panretinal photocoagulation on confocal laser scanning ophthalmoscopy and stereo photographic parameters of optic disk topography in patients with diabetic retinopathy
RESUMO Objetivo: Determinar o efeito da panfotocoagulação retiniana nos parâmetros topográficos do disco óptico em pacientes não glaucomatosos com retinopatia diabética proliferativa. Métodos: Este é um estudo observacional prospectivo e unicêntrico. Trinta e oito olhos de 26 pacientes diabéticos foram submetidos à panfotocoagulação retiniana
Arq. Bras. Oftalmol.. Publicado em: 29/04/2019
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4. A contribution for the development of fundus cameras / Uma contribuição ao projeto de retinógrafos digitais
This work presents the methodology applied to the development of a digital fundus camera. The proposed system was entirely developed and manufactured in Brazil, becoming the first digital fundus camera with national technology. The described equipment can perform fundus images, which are images captured from eye fundus observation, and also angiograms, which
Publicado em: 2009
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5. Clinical assessment of rhodopsin in the eye. Using a standard fundus camera and a photographic technique.
A technique based on the method of differential fundus reflectometry is used to assess the availability of rhodopsin in the eye. A defined part of the dark adapted fundus is bleached by a short intense flash of light. The fundus is subsequently photographed in order to record the flux reflected from the bleached area, the optogram, and the surrounding unblea
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6. Bracket for attaching the Kowa fundus camera to the Haag-Streit 900 slit lamp.
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7. Changes in waveform of congenital nystagmus associated with biofeedback treatment.
A study was made of parameters of congenital nystagmus which responded to auditory biofeedback treatment. The parameters studied included foveation time, amplitude, and frequency. The patient's right retina was observed with an infrared television fundus camera, and the fundus image was recorded on video tape. The position of the eye during nystagmus, observ
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8. Evaluation of a non-mydriatic camera in Indian and European diabetic patients.
The value of the Canon CR3-45NM non-mydriatic fundus camera in screening for diabetic retinopathy has been assessed in two ethnic groups, namely, 45 Indian and 40 European diabetic patients. There was 72% agreement between ophthalmoscopy by an ophthalmologist and the photographic assessment, and 100% agreement on clinically important lesions requiring treatm
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9. Confocal imaging of the fundus using a scanning laser ophthalmoscope.
A confocal scanning laser ophthalmoscope (cSLO) was used to examine the effects of confocal optics on the image of the human fundus in vivo. Patients from a retinal clinic and a glaucoma clinic were examined using the cSLO in the confocal mode. A degree of optical sectioning could be achieved, and the results agree with a best axial resolution of 300 microns
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10. Automatic detection of diabetic retinopathy using an artificial neural network: a screening tool.
AIMS: To determine if neural networks can detect diabetic features in fundus images and compare the network against an ophthalmologist screening a set of fundus images. METHODS: 147 diabetic and 32 normal images were captured from a fundus camera, stored on computer, and analysed using a back propagation neural network. The network was trained to recognise f
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11. Changes in colour contrast sensitivity associated with operating argon lasers.
A new test of colour vision using computer graphics has been used to obtain quantitative estimates of colour contrast sensitivity in ophthalmologists before and after they have treated patients by argon laser retinal photocoagulation. The colour vision of all subjects is normal when tested with the 100-hue test and HRR (Hardy, Rittler, Rand) plates, but colo
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12. Photography of the retinal nerve fibre layer: an optimised procedure.
Normal and abnormal fundi were photographed at various magnifications in one and the same fundus camera, with and without 'red-free' filters and various types of black-and-white and colour films. Colour diapositive films were copied on various black-and-white negative films, with and without filters. The final negatives were evaluated under magnification wit