Results 61 to 70 of about 712,500 (261)

Retinal Dysplasia Mimicking Retinoblastoma. [PDF]

, 2012
Retinal dysplasia represents a congenital disorder characterized by abnormal proliferation of retinal tissue causing leukocoria. We present a case of an infant with bilateral leukocoria, clinically diagnosed as retinoblastoma, followed by enucleation of ...
Joji, A, Ravikumar, HN, Santosh, KV, Vani, R   +3 more
core   +1 more source

Distinct synaptic transfer functions in same-type photoreceptors

eLife, 2021
Many sensory systems use ribbon-type synapses to transmit their signals to downstream circuits. The properties of this synaptic transfer fundamentally dictate which aspects in the original stimulus will be accentuated or suppressed, thereby partially ...
Cornelius Schröder, Jonathan Oesterle, Philipp Berens, Takeshi Yoshimatsu, Tom Baden   +4 more
doaj   +1 more source

Rhegmatogenous retinal detachment masquerading as exudative panuveitis with intense anterior chamber inflammatory reaction. [PDF]

, 2020
Purpose:This is a retrospective case report illustrating the diagnostic and therapeutic challenges associated with a chronic rhegmatogenous retinal detachment masquerading as a severe panuveitis with intense anterior chamber inflammation.
Bhisitkul, Robert B, Gonzales, John A, Joye, Ashlin S, Pereira, Daniel DS   +3 more
core  

Three-dimensional view of ultrafast dynamics in photoexcited bacteriorhodopsin [PDF]

, 2019
Bacteriorhodopsin (bR) is a light-driven proton pump. The primary photochemical event upon light absorption is isomerization of the retinal chromophore.
Batyuk, Alexander, Colletier, Jacques-Philippe, Ehrenberg, David, Grünbein, Marie Luise, Heberle, Joachim, Heyne, Karsten, Kovacs, Gabriela Nass, Schlesinger, Ramona, Stensitzki, Till, Yang, Yang   +9 more
core   +1 more source

Multifocal ocular haemorrhages secondary to COVID-19-related immune thrombocytopenia—Report of a rare case

TNOA Journal of Ophthalmic Science and Research
We report a rare case of subconjunctival, optic nerve head and retinal haemorrhages secondary to immune thrombocytopenia (ITP) associated with coronavirus disease 2019 (COVID-19).
K Divya, A Raghuram, S Padmanaban, Sujaya Menon   +3 more
doaj   +1 more source

Optical Coherence Tomography Angiography Characteristics of Polypoidal Lesions in Caucasians

Journal of Ophthalmology, 2023
Purpose. The aim of the study is to analyze the swept source-optical coherence tomography angiography (SS-OCTA) characteristics of polypoidal lesions in Caucasian patients. Methods.
Daniel Ahmed-Balestra, Alexandra Graf, Martin Stattin, Anna-Maria Haas, Stefan Kickinger, Michael Jacob, Claus Zehetner, Katharina Krepler, Siamak Ansari-Shahrezaei   +8 more
doaj   +1 more source

Intravitreal bevacizumab for the treatment of macular oedema secondary to branch retinal vein occlusion [PDF]

, 2008
Purpose: To evaluate the effect of intravitreal bevacizumab (Avastin) injections on visual acuity (VA) and foveal retinal thickness in patients with macular oedema secondary to branch retinal vein occlusion.Methods: A prospective, non-comparative ...
Alge, C. S., Burger, J., Haritoglou, Christos, Kampik, Anselm, Kook, Daniel, Kreutzer, Thomas C., Kunze, C., Priglinger, Siegfried, Strauss, R., Wolf, A. H.   +9 more
core   +1 more source

Calcitox-aging counterbalanced by endogenous farnesol-like sesquiterpenoids: An undervalued evolutionarily ancient key signaling pathway

Communicative & Integrative Biology, 2017
Cells are powerful miniature electrophoresis chambers, at least during part of their life cycle. They die at the moment the voltage gradient over their plasma membrane, and their ability to drive a self-generated electric current carried by inorganic ...
Arnold De Loof
doaj   +1 more source

Exploring the Retinal Binding Cavity of Archaerhodopsin-3 by Replacing the Retinal Chromophore With a Dimethyl Phenylated Derivative

Frontiers in Molecular Biosciences, 2021
Rhodopsins act as photoreceptors with their chromophore retinal (vitamin-A aldehyde) and they regulate light-dependent biological functions. Archaerhodopsin-3 (AR3) is an outward proton pump that has been widely utilized as a tool for optogenetics, a ...
Taichi Tsuneishi, Masataka Takahashi, Masaki Tsujimura, Keiichi Kojima, Hiroshi Ishikita, Hiroshi Ishikita, Yasuo Takeuchi, Yuki Sudo   +7 more
doaj   +1 more source

Retinal processing: insights from mathematical modelling [PDF]

Journal of Imaging, MDPI, In press, 2022
The retina is the entrance of the visual system. Although based on common biophysical principles the dynamics of retinal neurons is quite different from their cortical counterparts, raising interesting problems for modellers. In this paper I address some mathematically stated questions in this spirit, discussing, in particular: (1) How could lateral ...
arxiv