Results 21 to 30 of about 890,509 (310)

Prevalence of Color Vision Deficiencies

open access: yesOftalʹmologiâ, 2020
Purpose. The study of color deficiencies prevalence in young people, students of higher educational university.Materials and methods. The study was carried for the half year — fall semester. A total of 1,609 students were examined, aged 17–21. There were
I. A. Makarov
doaj   +1 more source

Higher order color mechanisms : Evidence from noise-masking experiments in cone contrast space [PDF]

open access: yes, 2013
This study addresses a fundamental question concerning the number of cortical, i.e., higher order mechanisms in color vision. The initial subcortical stages in color vision can be described by three cone mechanisms, S, M, L, and three pairs of second ...
Gegenfurtner, Karl R., Hansen, Thorsten
core   +2 more sources

CED: Color Event Camera Dataset [PDF]

open access: yes, 2019
Event cameras are novel, bio-inspired visual sensors, whose pixels output asynchronous and independent timestamped spikes at local intensity changes, called 'events'.
Barnes, Nick   +5 more
core   +1 more source

Factors associated with impaired color vision without retinopathy amongst people with type 2 diabetes mellitus: a cross-sectional study

open access: yesBMC Endocrine Disorders, 2017
Background Patients with type 2 diabetes mellitus (T2DM) may develop color vision impairment. This study aimed to determine the prevalence and factors associated with impaired color vision in patients with T2DM but without diabetic retinopathy.
N. C. Tan   +4 more
doaj   +1 more source

Vision, Light and Color in al-Kindi, Ptolemy and the Ancient Commentators [PDF]

open access: yes, 2006
Al-Kindi was influenced by two Greek traditions in his attempts to explain vision, light and color. Most obviously, his works on optics are indebted to Euclid and, perhaps indirectly, to Ptolemy.
Adamson, Peter
core   +1 more source

Variability and systematic differences in normal, protan and deutan color naming

open access: yesFrontiers in Psychology, 2014
Congenital color vision deficients generally demonstrate difficulties in color naming tasks. In our study we investigated the color naming properties and uncertainties of a relatively large group of red-green color vision deficients using quasi ...
BALAZS VINCE NAGY   +4 more
doaj   +1 more source

Vision of Colors [PDF]

open access: yesScientific American, 1878
n ...
openaire   +2 more sources

Why human color vision cannot reliably detect cerebrospinal fluid xanthochromia [PDF]

open access: yes, 2005
Background - Visual assessment of cerebrospinal fluid (CSF) for xanthochromia ( yellow color) is practiced by the majority of laboratories worldwide as a means of diagnosing intracranical bleeds.Methods - Colorimetric and spectrophotometric analysis of ...
Keir, G, Petzold, A, Sharpe, TL
core   +1 more source

Color Vision Defects in School Going Children

open access: yesJournal of Nepal Medical Association, 2010
Introduction: Color Vision defect can be observed in various diseases of optic nerve and retina and also a significant number of people suffer from the inherited condition of red and green color defect.
R K Shrestha   +3 more
doaj   +1 more source

Color space distortions in patients with type 2 diabetes mellitus [PDF]

open access: yes, 2006
Color vision impairment was examined in patients with type 2 diabetes mellitus (DM2) without retinopathy. We assessed the type and degree of distortions of individual color spaces. DM2 patients (n = 32), and age-matched controls (n = 20)were tested using
Bimler, David L.   +7 more
core   +1 more source

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