منابع مشابه
Delayed Appearance of High Altitude Retinal Hemorrhages
BACKGROUND Retinal hemorrhages have been described as a component of high altitude retinopathy (HAR) in association with altitude illness. In this prospective high altitude study, we aimed to gain new insights into the pathophysiology of HAR and explored whether HAR could be a valid early indicator of altitude illness. METHODOLOGY/PRINCIPAL FINDINGS 28 mountaineers were randomly assigned to t...
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mony is a virtue to which all physicians should strive in the practice of medicine. However, we disagree with the statement in the article that “Both parsimonious medicine and rationing aim to reduce resource use.” The aim of medical parsimony is to provide the care necessary for the patient’s good, not to reduce resource use (although it may in addition preserve resources)—a difference in inte...
متن کاملElectroretinographic assessment of retinal function at high altitude.
Although hypoxia plays a key role in the pathophysiology of many common and well studied retinal diseases, little is known about the effects of high-altitude hypoxia on retinal function. The aim of the present study was to assess retinal function during exposure to high-altitude hypoxia using electroretinography (ERG). This work is related to the Tübingen High Altitude Ophthalmology (THAO) stud...
متن کاملMissing correlation of retinal vessel diameter with high-altitude headache
The most common altitude-related symptom, high-altitude headache (HAH), has recently been suggested to originate from restricted cerebral venous drainage in the presence of increased inflow caused by hypoxia. In support of this novel hypothesis, retinal venous distension was shown to correlate with the degree of HAH. We quantified for the first time retinal vessel diameter changes at 4559 m usi...
متن کاملWhite-centered retinal hemorrhage
A 37-year-old woman presented with unilateral sudden drop in visual acuity of the right eye up to a week. Anamnesis revealed episodes of fever and headache. Examination showed visual acuity of 20/400 in the right eye and 20/20 in the left eye. The fundus examination showed white-centered retinal hemorrhage (Panel A, black arrow) in his right eye. The white center is due to cellular debris, to c...
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ژورنال
عنوان ژورنال: Journal of Clinical & Experimental Ophthalmology
سال: 2017
ISSN: 2155-9570
DOI: 10.4172/2155-9570.1000632