Retinal Oximetry
نویسندگان
چکیده
منابع مشابه
Automatic retinal oximetry.
PURPOSE To measure hemoglobin oxygen saturation (SO(2)) in retinal vessels and to test the reproducibility and sensitivity of an automatic spectrophotometric oximeter. METHODS Specialized software automatically identifies the retinal blood vessels on fundus images, which are obtained with four different wavelengths of light. The software calculates optical density ratios (ODRs) for each vesse...
متن کاملRetinal Oximetry Discovers Novel Biomarkers in Retinal and Brain Diseases.
Purpose Biomarkers for several eye and brain diseases are reviewed, where retinal oximetry may help confirm diagnosis or measure severity of disease. These include diabetic retinopathy, central retinal vein occlusion (CRVO), retinitis pigmentosa, glaucoma, and Alzheimer's disease. Methods Retinal oximetry is based on spectrophotometric fundus imaging and measures oxygen saturation in retinal ...
متن کاملRetinal Oximetry in a Healthy Japanese Population
PURPOSE To establish the normative database of retinal oximetry using Oxymap T1 in a healthy Japanese population, and study the reproducibility of the measurements in Japanese. METHODS We measured oxygen saturation in the major retinal vessels with Oxymap T1 in 252 eyes of 252 healthy Japanese subjects. Fundus images acquired using Oxymap T1 were processed using built-in Oxymap Analyzer softw...
متن کاملRetinal oximetry with a scanning laser ophthalmoscope.
PURPOSE The purpose of the study was to assess if a scanning laser ophthalmoscope (SLO), Optomap 200Tx, could be used for measurements of hemoglobin oxygen saturation in retinal blood vessels. METHODS Optomap 200Tx uses two lasers for image acquisition, 532 and 633 nm. Retinal images of healthy individuals and patients with retinal vein occlusion were analyzed with modified Oxymap Analyzer so...
متن کاملGlaucoma related retinal oximetry: a technology update
There are two long-standing theories about the pathogenesis of glaucoma - barotrauma and the effect of vascular hypoxia. Currently, it is still unknown whether diminished blood flow is the cause or result of glaucomatous atrophy of ganglion cells and the optic nerve. Though many other imaging techniques used to directly assess ocular blood flow have been well studied, they are limited by their ...
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ژورنال
عنوان ژورنال: Acta Ophthalmologica
سال: 2013
ISSN: 1755-375X
DOI: 10.1111/aos.12086