Results 141 to 150 of about 33,197 (253)

From Ganglion Cell to Photoreceptor Layer: Timeline of Deterioration in a Rat Ischemia/Reperfusion Model

Frontiers in Cellular Neuroscience, 2019
Neuronal damage and impaired vision in different retinal disorders are induced, among other factors, by ischemia/reperfusion (I/R). Since the mechanisms and the progression of ischemic injury are still not completely clarified, a timeline of this retinal
Marina Palmhof, Viktoria Frank, Pascal Rappard, Emely Kortenhorn, Julia Demuth, Nora Biert, Gesa Stute, H. Burkhard Dick, Stephanie C. Joachim   +8 more
doaj   +1 more source

\u3cem\u3eIn vivo\u3c/em\u3e Dark-field Imaging of the Retinal Pigment Epithelium Cell Mosaic [PDF]

, 2013
Non-invasive reflectance imaging of the human RPE cell mosaic is demonstrated using a modified confocal adaptive optics scanning light ophthalmoscope (AOSLO). The confocal circular aperture in front of the imaging detector was replaced with a combination
Dubra, Alfredo, Scoles, Drew, Sulai, Yusufu N.   +2 more
core   +1 more source

Black in Impressionism and Post‐Impressionism: Art, Color Vision, and Psychophysics

Color Research &Application, Volume 51, Issue 3, May/June 2026.
Black has engendered controversy in 19th Century color theory and in Impressionist and Post‐Impresssionist painting. The neural mechanisms of blackness perception are being revealed through contemporary psychophysics. ABSTRACT From Paleolithic cave art to modern abstraction, artists have used black not merely as a neutral tone, but as a powerful ...
John S. Werner
wiley   +1 more source

The Cone Dysfunction Syndromes [PDF]

, 2016
The cone dysfunction syndromes are a heterogeneous group of inherited, predominantly stationary retinal disorders characterised by reduced central vision, and varying degrees of colour vision abnormalities, nystagmus and photophobia.
Aboshiha, J, Carroll, J, Dubis, AM, Harcastle, AJ, Michaelides, M   +4 more
core  

Evolution of Peripheral Visual System in the Apoidea: A Role for Food Item Mobility?

Ecology and Evolution, Volume 16, Issue 5, May 2026.
Since larger compound eyes and ocelli altogether improve vision, one may expect that insects specialised in chasing very mobile resources possess such morphological optimisation. By analysing 77 species of bees and wasps, we have found that wasps had larger eyes, but not larger ocelli, than bees.
Chiara Francesca Trisoglio, Andrea Ferrari, Matteo Brilli, Michele Zilioli, Carlo Polidori   +4 more
wiley   +1 more source

Field‐free programmable bipolar magnetic heterostructures for neuromorphic computing

InfoMat, Volume 8, Issue 5, May 2026.
Neuromorphic computing mimics the brain's efficiency, yet typical memristors lack biological synapses' dual signal control. We introduce a magnetic memristor enabling bidirectional, multi‐state modulation without external fields, validated in image feature extraction and neural clustering.
Yaping He, Gaofei Wang, Jinfeng Zhai, Wentao Huang, Zhenyu Zhao, Zheng Zhang, Jiabin Shen, Pan He, Zengguang Cheng, Peng Zhou   +9 more
wiley   +1 more source

Automated measurements of human cone photoreceptor density in healthy and degenerative retina by region-based segmentation

Clinical Ophthalmology, 2017
Suguru Miyagawa,1,2 Hisashi Fukuyama,3 Masakazu Hirota,1 Tatsuo Yamaguchi,4 Kazuo Kitamura,4 Takao Endo,3 Hiroyuki Kanda,1 Takeshi Morimoto,1 Takashi Fujikado1 1Department of Applied Visual Science, Osaka University Graduate School of Medicine, Suita ...
Miyagawa S, Fukuyama H, Hirota M, Yamaguchi T, Kitamura K, Endo T, Kanda H, Morimoto T, Fujikado T   +8 more
doaj  

A Neural Network Model for the Spatial and Temporal Response of Retinal Ganglion Cells [PDF]

, 1991
This article introduces a quantitative model of early visual system function. The model is formulated to unify analyses of spatial and temporal information processing by the nervous system. Functional constraints of the model suggest mechanisms analogous
Gaudiano, Paolo
core   +1 more source

Homozygous Pathogenic Variant in Elongation Factor‐Like 1 (EFL1) as a Causal Factor in Shwachman‐Diamond Syndrome 2 in a Palestinian Child, With Distinct Ocular Manifestations

Molecular Genetics &Genomic Medicine, Volume 14, Issue 5, May 2026.
We report a Palestinian female infant with a homozygous pathogenic EFL1 variant (c.3284G>A; p.Arg1095Gln) causing Shwachman–Diamond syndrome type 2 (SDS2). Beyond the classical features of pancytopenia, exocrine pancreatic insufficiency, and growth failure, the patient showed previously unreported ocular manifestations—stage 2–3 retinopathy of ...
Ibrahim Taha, Antonella Minelli, Cesare Danesino, Abdelrahman Swalmeh, Khalil Huraibat, Liana Al‐Labadi, Rema Obar, Khaled R. Beshtawi, Lubna Abu Samrah, Yousef Awlad Mohammad, Aya Farah, Abdulrahman Obar, Mutasem Khalaf, Orwa Nasser   +13 more
wiley   +1 more source

Congenital Ocular Findings in an Antillean Manatee (Trichechus manatus manatus)

Veterinary Medicine and Science, Volume 12, Issue 3, May 2026.
This study reports the first documented case of bilateral congenital cataract associated with retinal dysplasia in an Antillean manatee (Trichechus manatus manatus) calf. Ophthalmologic examination and ocular ultrasonography confirmed lens opacity at the posterior pole, which correlated with behavioural deficits consistent with visual impairment.
Fernanda Loffler Niemeyer Attademo, Radan Elvis Matias de Oliveira, Fábia de Oliveira Luna, Helena Gurjão Pinheiro do Val, Lucas Inácio dos Santos Melo, Lisandra Hannah Shttoves da Silva, Bruna Bezerra, Fabrício Bezerra de Sá   +7 more
wiley   +1 more source