Pupil Light Reflex
Mostrando 1-5 de 5 artigos, teses e dissertações.
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1. Photorealistic models for pupil light reflex and iridal pattern deformation / Modelos fotorealistas para dinâmica pupilar em função da iluminação e deformação dos padrões da iris
Este trabalho introduz um modelo fisiológico para o reflexo pupilar em função das condições de iluminação (Pupil Light Reflex - PLR), e um modelo baseado em imagem para deformação dos padrões da íris. O modelo para PLR expressa o diâmetro da pupila ao longo do tempo e em função da iluminação ambiental, sendo descrito por uma equação diferen
Publicado em: 2009
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2. Altered pupillary size and darkness and light reflexes in Alzheimer's disease.
The purpose was to compare resting pupil diameter in darkness and light, and the pupillary darkness and light reflexes between a group of patients with Alzheimer's disease and a group of healthy old people. Nine medication free patients with Alzheimer's disease and nine healthy control subjects, matched for sex and age with the patients, participated. There
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3. Assessment of pupillary light reflex latency and darkness adapted pupil size in control subjects and in diabetic patients with and without cardiovascular autonomic neuropathy.
Increased pupillary light reflex latencies were found more often than a reduced darkness pupil size in diabetic patients with and without abnormal cardiovascular reflexes. This finding suggests that parasympathetic pupillary dysfunction precedes sympathetic pupillary denervation in diabetic autonomic neuropathy.
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4. Pupil cycle time: a simple way of measuring an autonomic reflex.
Persistent regular oscillations of the pupil of the eye can be induced using a slit-lamp. The period of these oscillations, pupil cycle time (PCT), is simple to measure with a hand-held stop-watch. Evidence from pharmacological testing suggests that PCT is a sensitive measure of dysfunction of the parasympathetic efferent limb of the pupillary light reflex a
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5. Ocular and cardiovascular effects of local and systemic pindolol.
Ocular and cardiovascular effects of topical and intravenous pindolol have been studied in a balanced cross-0ver double-blind trial in 6 healthy volunteers. When applied to 1 eye pindolol lowered intraocular pressure in both the treated and untreated eyes with only minimal reduction in resting pupil diameter and light reflex response. The concentration in pl