Results 1 to 10 of about 995,683 (263)
A Fully Convolutional Neural Network based Structured Prediction Approach Towards the Retinal Vessel Segmentation [PDF]
arXiv, 2016 Automatic segmentation of retinal blood vessels from fundus images plays an important role in the computer aided diagnosis of retinal diseases. The task of blood vessel segmentation is challenging due to the extreme variations in morphology of the vessels against noisy background.
A. Dasgupta, Sonam Singh
arxiv +3 more sources
Creation of photocyclic vertebrate rhodopsin by single amino acid substitution
eLife, 2022 Opsins are universal photoreceptive proteins in animals and can be classified into three types based on their photoreaction properties. Upon light irradiation, vertebrate rhodopsin forms a metastable active state, which cannot revert back to the original
Kazumi Sakai +3 more
doaj +1 more source
Diabetic retinal detachment surgery at a central academic hospital, Johannesburg, South Africa
African Vision and Eye Health, 2023 Background: Tractional retinal detachment surgery outcomes are unpredictable and need to be reviewed regularly in clinical practice settings. Aim: To describe the visual acuity and anatomical outcomes of retinal detachment surgery for diabetic ...
Mathabo Mofokeng +1 more
doaj +1 more source
International Journal of Clinical Practice, 2023 Purpose. This study was carried out to evaluate the visual acuity (VA), complications, and prognosis of patients diagnosed with submacular hemorrhage (SMH) from polypoidal choroidal vasculopathy (PCV) and retinal arterial macroaneurysm (RAM) treated by ...
Jianhua Wu +8 more
doaj +1 more source
Applied Sciences, 2021 The optical coherence tomography angiography (OCTA) is a noninvasive imaging technology which aims at imaging blood vessels in retina by studying decorrelation signals between multiple sequential OCT B-scans captured in the same cross section.
Fatma Taher +8 more
doaj +1 more source
Role of Thr82 for the unique photochemistry of TAT rhodopsin
Biophysics and Physicobiology, 2021 Marine bacterial TAT rhodopsin possesses the pKa of the retinal Schiff base, the chromophore, at neutral pH, and photoexcitation of the visible protonated state forms the isomerized 13-cis state, but reverts to the original state within 10–5 sec.
Teppei Sugimoto +2 more
doaj +1 more source
Metabolites, 2021 We aimed to investigate whether retinal and retinoic acid (RA), which are newly discovered biomarkers from our previous research, reliably predict type 2 diabetes mellitus (T2DM) development in subjects with impaired fasting glucose (IFG).
Youngmin Han +5 more
doaj +1 more source
Development of a protocol for maintaining viability while shipping organoid-derived retinal tissue. [PDF]
, 2020 Retinal organoid technology enables generation of an inexhaustible supply of three-dimensional retinal tissue from human pluripotent stem cells (hPSCs) for regenerative medicine applications.
Binette, Francois +6 more
core +1 more source
Functions and Diseases of the Retinal Pigment Epithelium
Frontiers in Pharmacology, 2021 The retinal pigment epithelium is a fundamental component of the retina that plays essential roles in visual functions. Damage to the structure and function of the retinal pigment epithelium leads to a variety of retinopathies, and there is currently no ...
Song Yang, Jun Zhou, Dengwen Li
semanticscholar +1 more source
Quantitative analysis of retinal vasculature in normal eyes using ultra-widefield fluorescein angiography [PDF]
International Journal of Ophthalmology, 2021 AIM: To quantify the area and density of retinal vascularity by ultra-widefield fluorescein angiography (UWFA). METHODS: In a retrospective study, UWFA images were obtained using an ultra-widefield imaging device in 42 normal eyes of 42 patients. Central
Jing-Wen Jiang +5 more
doaj +1 more source