Results 11 to 20 of about 54,051 (195)

FOVEA: a new program to standardize the measurement of foveal pit morphology [PDF]

open access: yesPeerJ, 2016
The fovea is one of the most studied retinal specializations in vertebrates, which consists of an invagination of the retinal tissue with high packing of cone photoreceptors, leading to high visual resolution.
Bret A. Moore   +4 more
doaj   +3 more sources

The Visual Ecology of Anolis Lizards [PDF]

open access: yesAnimals
Visual ecology explores how animal visual systems are related to light environments and important visual tasks. Anolis is a species-rich genus of small lizards that rely extensively on vision.
Leo J. Fleishman
doaj   +2 more sources

Motion extrapolation in the central fovea [PDF]

open access: yes, 2012
Neural transmission latency would introduce a spatial lag when an object moves across the visual field, if the latency was not compensated. A visual predictive mechanism has been proposed, which overcomes such spatial lag by extrapolating the position of
Nijhawan, Romi   +7 more
core   +1 more source

Different modes of foveal regeneration after closure of full-thickness macular holes by (re)vitrectomy and autologous platelet concentrate [PDF]

open access: yesInternational Journal of Ophthalmology, 2020
AIM: To describe using spectral-domain optical coherence tomography the regeneration of the foveal morphology after pars plana (re)vitrectomy surgery and gas tamponade combined with injection of autologous platelet concentrate to treat full-thickness ...
Andreas Bringmann   +5 more
doaj   +1 more source

Two visual pathways in primates based on sampling of space: exploitation and exploration of visual information

open access: yesFrontiers in Integrative Neuroscience, 2016
Evidence is strong that the visual pathway is segregated into two distinct streams – ventral and dorsal. Two proposals theorize that the pathways are segregated in function: The ventral stream processes information about object identity, whereas the ...
Bhavin Sheth, Bhavin Sheth, Ryan Young
doaj   +1 more source

FundusPosNet: A Deep Learning Driven Heatmap Regression Model for the Joint Localization of Optic Disc and Fovea Centers in Color Fundus Images

open access: yesIEEE Access, 2021
The localization of the optic disc and fovea is crucial in the automated diagnosis of various retinal diseases. We propose a novel deep learning driven heatmap regression model based on the encoder-decoder architecture for the joint detection of optic ...
Bhargav J. Bhatkalkar   +3 more
doaj   +1 more source

Multimodal Imaging in a Case of Fovea Plana Associated with Situs Inversus of the Optic Disc

open access: yes, 2020
Fovea plana is a congenital condition characterized by anatomic absence of the foveal pit. It may be isolated or associated with congenital ocular anomalies.
Berrak Şekeryapan Gediz   +1 more
core   +1 more source

Foveal Phase Retardation Correlates With Optically Measured Henle Fiber Layer Thickness

open access: yesFrontiers in Medicine, 2022
This study quantified and compared phase retardation distribution in the central macula with the thickness of the Henle fiber layer (HFL). A scanning laser polarimeter (SLP) was used to acquire 20° × 40° macular-centered images, either with fixed corneal
Phillip T. Yuhas   +8 more
doaj   +1 more source

Unilateral double optic nerve head pits with foveo-schisis detachment treated by modified internal limiting membrane peeling technique

open access: yesIndian Journal of Ophthalmology, 2022
A 44-year-old female with a vision of 10/200 in the right eye had double pits in the temporal segment of the optic disc with serous macular detachment.
Kshitiz Kumar, Debashish Bhattacharya
doaj   +1 more source

What Drives Bird Vision? Bill Control and Predator Detection Overshadow Flight

open access: yesFrontiers in Neuroscience, 2017
Although flight is regarded as a key behavior of birds this review argues that the perceptual demands for its control are met within constraints set by the perceptual demands of two other key tasks: the control of bill (or feet) position, and the ...
Graham R. Martin
doaj   +1 more source

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