Results 21 to 30 of about 21,937 (252)

Bioelectric activity of the visual system in trichromats and color-blinds according to visual evoked potentials to achromatic and chromatic stimuli

open access: yesJournal of Ophthalmology, 2017
Background. Psychophysical methods, the most known of which are polychromatic tables and spectral anomaloscope study, are used for diagnostics of color vision defects.
N.I.Khramenko   +2 more
doaj   +1 more source

Color weakness in congenital color perception deficiency of various degrees

open access: yesJournal of Ophthalmology, 2018
Background: The prevalence of congenital color vision defects (CCVD) is reported to be approximately 8% in males and 0.5% in females, and, therefore, the use of optimal tests capable of diagnosing these defects early and accurately, and with all the ...
A.V. Ponomarchuk, N.I. Khramenko
doaj   +1 more source

A rare case of Vogt–Koyanagi–Harada disease presenting simultaneously with pituitary macroadenoma

open access: yesKerala Journal of Ophthalmology, 2022
A 45-year-old female presented with sudden painful loss of vision in both eyes of 1-week duration. Clinical findings and imaging studies suggested Vogt–Koyanagi–Harada (VKH) disease. She was started on systemic steroids.
Pradeep Kumar Panigrahi
doaj   +1 more source

The genetics of normal and defective color vision

open access: yesVision Research, 2011
The contributions of genetics research to the science of normal and defective color vision over the previous few decades are reviewed emphasizing the developments in the 25years since the last anniversary issue of Vision Research. Understanding of the biology underlying color vision has been vaulted forward through the application of the tools of ...
Neitz, Jay, Neitz, Maureen
openaire   +2 more sources

Rayleigh Equation Anomaloscope from Commercially Available LEDs

open access: yesMedžiagotyra, 2012
Most precise classification of CVD (color vision deficits) can be provided by using anomaloscope. Today anomaloscopes are available, which can evaluate red-green (Rayleigh) and blue-green (Moreland) color defects.DOI: http://dx.doi.org/10.5755/j01.ms.18 ...
Renārs TRUKŠA   +2 more
doaj   +1 more source

Color and contrast vision in mouse models of aging and Alzheimer’s disease using a novel visual-stimuli four-arm maze

open access: yesScientific Reports, 2021
We introduce a novel visual-stimuli four-arm maze (ViS4M) equipped with spectrally- and intensity-controlled LED emitters and dynamic grayscale objects that relies on innate exploratory behavior to assess color and contrast vision in mice.
Jean-Philippe Vit   +7 more
doaj   +1 more source

Methods for determining color characteristics of vegetable raw materials. A review

open access: yesПищевые системы, 2022
Food product quality defines a complex of food product properties such size, shape, texture, color and others, and determines acceptability of these products for consumers.
N. I. Fedyanina   +2 more
doaj   +1 more source

Assessing higher-order visual functions: seeing beyond a flat earth [PDF]

open access: yesDementia & Neuropsychologia
. Vision is a sensory resource that enables the creation of an internal model for perceiving the external world. The act of seeing is much more than the mere process of light reflection on the retina.
Henrique Soares Dutra Oliveira   +4 more
doaj   +1 more source

The PRIMA Thesaurus for Materials Science and Engineering

open access: yesAdvanced Engineering Materials, EarlyView.
The PRIMA Thesaurus is a structured vocabulary designed to improve how materials science data is described and shared. Developed with input from multiple experts, it enables clear documentation of research workflows, data exchange, and reuse across platforms.
Rossella Aversa   +8 more
wiley   +1 more source

Successive Color Contrast in Defective Color Vision

open access: yesThe Tohoku Journal of Experimental Medicine, 1956
Retinal induction was studied in normal and color-defective subjects by means of Motokawa's method. 1. The effect of light in terms of ζ was investigated with spectral lights, and it was found that the ζ value for red lights was dicidedly small in a protanomalous. 2.
openaire   +3 more sources

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