Results 1 to 10 of about 801,615 (335)

Diabetic retinal detachment surgery at a central academic hospital, Johannesburg, South Africa

open access: yesAfrican 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

Visual Recovery and Prognosis in the Treatment of Submacular Hemorrhage due to Polypoidal Choroidal Vasculopathy and Retinal Arterial Macroaneurysm: A Retrospective Study

open access: yesInternational 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

Creation of photocyclic vertebrate rhodopsin by single amino acid substitution

open access: yeseLife, 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

Role of Thr82 for the unique photochemistry of TAT rhodopsin

open access: yesBiophysics 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

Serum Retinal and Retinoic Acid Predict the Development of Type 2 Diabetes Mellitus in Korean Subjects with Impaired Fasting Glucose from the KCPS-II Cohort

open access: yesMetabolites, 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

A Comprehensive Review of Retinal Vascular and Optical Nerve Diseases Based on Optical Coherence Tomography Angiography

open access: yesApplied 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

ResWnet for Retinal Small Vessel Segmentation

open access: yesIEEE Access, 2020
U-Net shows excellent performance in biomedical image segmentation tasks, Variants of U-Net have been proposed, such as U-Net with residual blocks, densely connected convolution, or deformed convolution.
Yu Tang   +4 more
doaj   +1 more source

Quantitative analysis of retinal vasculature in normal eyes using ultra-widefield fluorescein angiography [PDF]

open access: yesInternational 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

The Root Clock as a Signal Integrator System: Ensuring Balance for Survival

open access: yesFrontiers in Plant Science, 2022
The root system is essential for the survival of terrestrial plants, plant development, and adaptation to changing environments. The development of the root system relies on post-embryonic organogenesis and more specifically on the formation and growth ...
Estefano Bustillo-Avendaño   +2 more
doaj   +1 more source

Modeling of external self-excitation and force generation on magnetic nanoparticles inside vitreous cavity

open access: yesMathematical Biosciences and Engineering, 2021
The purpose of this manuscript was to design a better method for recovery from rhegmatogenous retinal detachment (RRD) surgery. We attempted to achieve this by designing a helmet that can manipulate intraocular magnetic nanoparticles (MNPs) and create a ...
Evan Parker   +6 more
doaj   +1 more source

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