Results 21 to 30 of about 2,036,611 (265)

Colour vision deficiencies in Alzheimer's disease [PDF]

open access: yesAge and Ageing, 2003
visual disorders are among the earliest symptoms of Alzheimer's disease. It is, however, still controversial as to whether Alzheimer's disease impairs colour vision. In this study, colour vision of Alzheimer's disease patients was tested using the Ishihara test and the PV-16 choice test.
Pache, M   +6 more
openaire   +3 more sources

Colour-emotion associations in individuals with red-green colour blindness [PDF]

open access: yesPeerJ, 2021
Colours and emotions are associated in languages and traditions. Some of us may convey sadness by saying feeling blue or by wearing black clothes at funerals.
Domicele Jonauskaite   +7 more
doaj   +2 more sources

The retinal mosaic, eye movements and colour vision [PDF]

open access: yes, 2021
Human colour vision is trichromatic: it is underpinned by the comparison of signals from three different classes of cone photoreceptor, those maximally sensitive to long (L), middle (M) and short (S) wavelengths.
Regan, Sarah Elizabeth
core   +1 more source

TM-30-20 and CIE-CRI-Ra : investigation of colour rendering of white pc LEDs [PDF]

open access: yes, 2023
Nowadays, phosphor converted LEDs (pc LED) are used in indoor lighting applications. Colour rendering properties play an important role in the development of powerful LED light sources.
Schierz, Christoph:, Bieske, Karin
core   +1 more source

Individualised Halo-Free Gradient-Domain Colour Image Daltonisation

open access: yesJournal of Imaging, 2020
Daltonisation refers to the recolouring of images such that details normally lost by colour vision deficient observers become visible. This comes at the cost of introducing artificial colours.
Ivar Farup
doaj   +1 more source

Colour Vision Revisited

open access: yesDelhi Journal of Ophthalmology, 2014
Congenital red-green colour deficiency is an X-linked inherited disorder more frequently encountered in males compared to females. Screening of coour deficiency is crucial in various occupations, at times to safeguard colour deficient individual as well ...
Twinkle Parmar   +4 more
doaj   +1 more source

Prevalence of color vision deficiency among school children in Wolkite, Southern Ethiopia

open access: yesBMC Research Notes, 2018
Objective Colour vision deficiency is the commonest disorders of vision and undiagnosed colour vision defect could pose a handicap to the performance of an affected student.
Gashaw Garedew Woldeamanuel   +1 more
doaj   +1 more source

Comparing the validity of an online Ishihara colour vision test to the traditional Ishihara handbook in a South African university population

open access: yesAfrican Vision and Eye Health, 2018
Background: Colour vision tests are becoming increasingly available on online platforms to the ordinary internet user. Limited research has been conducted to establish the validity of these tests for use as screening tools for colour deficiency. Aim: To
Diane van Staden   +5 more
doaj   +1 more source

Vision in-experience : investigating the interaction between the correct non-prototypical colours of colour diagnostic objects and object representation in human observers [PDF]

open access: yes, 2015
Hering (1964) hypothesized that the representation of a familiar object, which primarily includes its prototypical colour on the visual, conceptual and lexical domains may significantly influence how human observers organize the object’s chromatic ...
Adeyefa-Olasupo, Ifedayo-Emmanuel
core   +2 more sources

Impact of congenital colour vision deficiency [PDF]

open access: yesBMJ, 2005
EDITOR—The data of Cumberland et al suggest that screening for colour blindness may not be necessary.1 My colour “blindness” was not discovered until I was 19 during a medical examination for airforce pilots. Needless to say that was the end of any …
Jugnoo S Rahi   +2 more
  +6 more sources

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