Results 21 to 30 of about 719,139 (306)
Interactive Blood Vessel Segmentation from Retinal Fundus Image Based on Canny Edge Detector
Sensors, 2021 Optometrists, ophthalmologists, orthoptists, and other trained medical professionals use fundus photography to monitor the progression of certain eye conditions or diseases. Segmentation of the vessel tree is an essential process of retinal analysis.
Alexander Ze Hwan Ooi +8 more
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Dampening Spontaneous Activity Improves the Light Sensitivity and Spatial Acuity of Optogenetic Retinal Prosthetic Responses [PDF]
, 2016 Retinitis pigmentosa is a progressive retinal dystrophy that causes irreversible visual impairment and blindness. Retinal prostheses currently represent the only clinically available vision-restoring treatment, but the quality of vision returned remains ...
Barrett, John Martin +2 more
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Retinal Hemodynamics in Retinitis Pigmentosa
American Journal of Ophthalmology, 1996 To investigate the retinal hemodynamic changes occurring in patients with retinitis pigmentosa (RP).Bidirectional laser Doppler velocimetry and monochromatic fundus photography were used to determine retinal venous diameter (D), maximum erythrocyte velocity (Vmax), and volumetric blood flow (Q) in the major retinal veins of eight patients with RP and ...
J E, Grunwald, A M, Maguire, J, Dupont
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Retinal location and structure in squid rhodopsin [PDF]
, 2021 In order to understand retinal we calculated the dihedral angles around carbon axis IOC-12C, since two different carbon sequences 9C-10C-11C-12C and 10C-11C-12C-13C exist. We also calculated the distances between two specified carbon pairs. Those results
Kito, Masashi +2 more
core
Monitoring retinal changes with optical coherence tomography predicts neuronal loss in experimental autoimmune encephalomyelitis. [PDF]
, 2019 BACKGROUND:Retinal optical coherence tomography (OCT) is a clinical and research tool in multiple sclerosis, where it has shown significant retinal nerve fiber (RNFL) and ganglion cell (RGC) layer thinning, while postmortem studies have reported RGC loss.
Aktas, Orhan +18 more
core +1 more source
IEEE Transactions on Biomedical Engineering, 2012 Retinal prosthesis has been translated from the laboratory to the clinic over the past two decades. Currently, two devices have regulatory approval for the treatment of retinitis pigmentosa. These devices provide partial sight restoration and patients use this improved vision in their everyday lives.
James D, Weiland, Mark S, Humayun
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Uptake and metabolism of retinol (vitamin A) in the isolated perfused rat liver
Journal of Lipid Research, 1965 The isolated perfused liver was employed to study various aspects of retinol-C14 metabolism. The rate of uptake of retinol, retinal, retinoic acid, and retinol acetate was rapid (first-order rate constant, k = 0.12–0.16 min−1) during the first 3–10 min ...
Richard D. Zachman, James Allen Olson
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Impaired endothelial function of the retinal vasculature in hypertensive patients [PDF]
, 2004 <p><b>Background and Purpose:</b> Arterial hypertension constitutes a central factor in the pathogenesis of stroke. We examined endothelial function of the retinal vasculature as a model of the cerebral circulation.</p> <p ...
Delles, C. +5 more
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romanian journal of ophthalmology, 2020 Retinal migraine is usually defined by transitory attacks of fully reversible monocular visual loss, mostly with aura. An accurate diagnostic can be completed based upon the International Classification of Headache Disorders-2 (ICHD-2) criteria. In view of this, we summarized some clinical features, treatment principles, complications, prognosis and ...
Bogdan Marius, Istrate +2 more
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In Vivo Human Choroidal Vascular Pattern Visualization Using High-Speed Swept-Source Optical Coherence Tomography at 1060 nm [PDF]
, 2012 Purpose. To investigate the retinal and choroidal vascular pattern, structure, and thickness using high-speed, high axial resolution, swept-source optical coherence tomography (SS-OCT) at 1060 nm, demonstrating enhanced penetration through all choroidal ...
Fraser, Scott E. +2 more
core +1 more source