Results 21 to 30 of about 712,970 (307)
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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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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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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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
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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Microscopic Inner Retinal Hyper-reflective Phenotypes in Retinal and Neurologic Disease [PDF]
, 2014 Purpose. We surveyed inner retinal microscopic features in retinal and neurologic disease using a reflectance confocal adaptive optics scanning light ophthalmoscope (AOSLO). Methods. Inner retinal images from 101 subjects affected by one of 38 retinal or
Carroll, Joseph +9 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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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
The effects of growth factors on multicellular spheroids formed by chick embryonic retinal cells [PDF]
, 1997 Retinal cells from chick embryos aged 7.5 days of gestation were cultured for two months in a non-adherent suspension culture dish to study the effects of growth factors and co-culture with retinal pigment epithelial cells on their differentiation ...
Matsuo, Nobuhiko +2 more
core +1 more source