Results 1 to 10 of about 17,930 (224)

Suspected ophthalmic artery fat embolus following bilateral elbow liposuction [PDF]

American Journal of Ophthalmology Case Reports
Purpose: To present a rare case of a suspected ophthalmic artery fat embolus in a patient who underwent bilateral elbow liposuction. Observations: The patient, a 44-year-old female with past smoking history and stable meningioma with no associated ...
Krishna Sinha, Marie A. Di Nome, Odette M. Houghton   +2 more
doaj   +2 more sources

The bifocal scotoma

Indian Journal of Ophthalmology, 2020
Amber A Bhayana, Vinit Tanwar
doaj   +3 more sources

Target Maintenance in Gaming via Saliency Augmentation: An Early-Stage Scotoma Simulation Study Using Virtual Reality (VR)

Applied Sciences, 2021
This study addresses the importance of salience placement before or after scotoma development for an efficient target allocation in the visual field. Pre-allocation of attention is a mechanism known to induce a better gaze positioning towards the target.
Alexandra Sipatchin, Miguel García García, Siegfried Wahl   +2 more
doaj   +1 more source

Visual Field Loss: Integrating Overlayed Information to Increase the Effective Field of View

Vision, 2022
Visual field loss is a debilitating impairment that can impact normal daily activities. The advancement of augmented and virtual realities brings opportunities for potential substitutive technologies for visual field loss.
Jordi M. Asher, Paul B. Hibbard
doaj   +1 more source

Gaze-contingent flicker pupil perimetry detects scotomas in patients with cerebral visual impairments or glaucoma [PDF]

, 2018
The pupillary light reflex is weaker for stimuli presented inside as compared to outside absolute scotomas. Pupillograph perimetry could thus be an objective measure of impaired visual processing.
Bergsma, Douwe P, Dumoulin, Serge O, Fracasso, Alessio, Naber, Marnix, Porro, Giorgio L, Roelofzen, Carlien, van Genderen, Mies   +6 more
core   +8 more sources

Scintillating scotoma following optic nerve compression caused by an unruptured anterior communicating artery aneurysm: a case report

Egyptian Journal of Neurosurgery, 2022
Background Scintillating scotoma caused by optic nerve compression by aneurysm is rare. We report a case of scintillating scotoma following optic nerve compression caused by an unruptured anterior communicating artery aneurysm.
Megumi Matsuda, Takeo Murahashi, Yusuke Nakagaki, Hideki Endo, Youichi Nakagaki   +4 more
doaj   +1 more source

The Role of the Inner Nuclear Layer for Perception of Persisting Tiling Inside a Monocular Scotoma

Brain Sciences, 2022
We report two patients, one with and one without long-term persistent tiling inside an arcuate macular scotoma. In both cases, the scotoma was caused by a cilioretinal artery occlusion.
Rishikesh Gandhewar, Neringa Jurkute, Axel Petzold   +2 more
doaj   +1 more source

Coordinated optimization of visual cortical maps (I) Symmetry-based analysis [PDF]

, 2012
In the primary visual cortex of primates and carnivores, functional architecture can be characterized by maps of various stimulus features such as orientation preference (OP), ocular dominance (OD), and spatial frequency.
A Cimponeriu, A Das, A Grinwald, A Shmuel, A Shmuel, A Soward, AA Koulakov, AA Koulakov, B Chapman, B Chapman, BJ Farley, CF Stevens, CJ Shatz, CJ Shatz, DB Chklovskii, DH Hubel, DL Adams, Dominik Heide, E Bartfeld, E Bodenschatz, E Erwin, E Erwin, F Wolf, F Wolf, F Wolf, FH Busse, Fred Wolf, GG Blasdel, GG Blasdel, GG Blasdel, GJ Goodhill, GJ Goodhill, GJ Mitchison, H Nakagama, H Yu, HY Lee, JA Bednar, JB Swift, JC Horton, JC Horton, Justin C. Crowley, K Obermayer, K Obermayer, K Obermayer, K Obermayer, K Ohki, K Ohki, KD Miller, L Reichl, L Reichl, Lars Reichl, LE White, LE White, M Hubener, M Kaschube, M Kaschube, M Kaschube, M Kaschube, M Schnabel, M Weliky, MA Carreira-Perpinan, MA Carreira-Perpinan, MA Carreira-Perpinan, Matthias Kaschube, MC Crair, MC Crair, MC Cross, MW Cho, MW Cho, N Mayer, ND Mermin, NP Issa, NP Issa, NV Swindale, NV Swindale, NV Swindale, NV Swindale, NV Swindale, NV Swindale, NV Swindale, NV Swindale, NV Swindale, Olaf Sporns, PC Bressloff, PC Bressloff, PC Bressloff, PJ Thomas, R Durbin, R Engelmann, RAW Galuske, S Grossberg, S LeVay, S Löwel, S Löwel, SC Rao, Siegrid Löwel, T Bonhoeffer, T Bonhoeffer, T Bonhoeffer, V Braitenberg, W Zhang, WH Bosking, X Xu, Y Li, Y Matsuda   +104 more
core   +5 more sources

Homonymous visual field defects in patients with multiple sclerosis: results of computerised perimetry and optical coherence tomography

Swiss Medical Weekly, 2020
AIMS OF THE STUDY Visual dysfunction is frequent in multiple sclerosis, usually resulting from retrobulbar optic neuritis or papillitis. Less frequently, demyelinating lesions can affect the retrochiasmal pathways.
Lydia Schmutz, François-Xavier Borruat
doaj   +1 more source

Metastatic paraganglioma presenting as ajunctional scotoma

American Journal of Ophthalmology Case Reports, 2022
Purpose: To report a unique case of metastatic paraganglioma presenting as a junctional scotoma. Observations: A 38-year-old Caucasian man with a history of abdominal paraganglioma presented with minimally blurred vision 20/25 visual acuity in the left ...
Mohamed M. Khodeiry, John T. Lind, Joshua Pasol, Byron L. Lam, Richard K. Lee   +4 more
doaj   +1 more source