Preliminary Norms for the Cambridge Colour Test

Ventura, Dora Fix; Silveira, L. C. L.; Rodrigues, Anderson Raiol; Souza, John Manuel de; Gualtieri, Mirella; Bonci, D.; Costa, Marcelo Fernandes

doi:10.1093/acprof:oso/9780198525301.003.0034

Cited by 52 publications

(74 citation statements)

References 3 publications

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“…lower discriminiation along confusion axes After the publication of Mollon and Reffin's about the CCT (2000), several studies using Trivector have been published. Including preliminary norms for the use of CCT (Ventura et al, 2003), which was considered by the creators of the CCT on the software website (http://www.crsltd.com/tools-for-vision-science/measuring-visual-functions/cambridge-colour-test/)…”

Section: Rd Paragraph In the Discussion Sectionmentioning

confidence: 99%

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Comparison of color discrimination in chronic heavy smokers and healthy subjects

Fernandes

Santos

2017

F1000Res

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Cigarette smoke is probably the most significant source of Background: exposure to toxic chemicals for humans, involving health-damaging components, such as nicotine, hydrogen cyanide and formaldehyde. The aim of the present study was to assess the influence of chronic heavy smoking on color discrimination (CD).All subjects were free of any Methods: neuropsychiatric disorder, identifiable ocular disease and had normal acuity. No abnormalities were detected in the fundoscopic examination and in the optical coherence tomography exam. We assessed color vision for healthy heavy smokers ( = 15; age range, 20-45 years), deprived smokers ( = 15, n n age range 20-45 years) and healthy non-smokers ( = 15; age range, 20-45 n years), using the psychophysical forced-choice method. All groups were matched for gender and education level. In this paradigm, the volunteers had to choose the pseudoisochromatic stimulus containing a test frequency at four directions (e.g., up, down, right and left) in the subtest of Cambridge Colour Test (CCT): Trivector.Performance on CCT differed between groups, Results: and the observed pattern was that smokers had lower discrimination compared to non-smokers. In addition, deprived smokers presented lower discrimination to smokers and non-smokers. Contrary to expectation, the largest differences were observed for medium and long wavelengths.These results Conclusions:suggests that cigarette smoke and chronic exposure to nicotine, or withdrawal from nicotine, affects CD. This highlights the importance of understanding the diffuse effects of nicotine either attentional bias on color vision. Keywords

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Section: Rd Paragraph In the Discussion Sectionmentioning

confidence: 99%

“…The neurotoxic effects of chronic use and smoking abstinence on the nervous system have not been extensively studied [6][7][8] . The need for establishing reliable measures that assess the effects of smoking on sensory, perceptual and cognitive domains is crucial to fill these gaps.…”

Section: Introductionmentioning

confidence: 99%

Comparison of color discrimination in chronic heavy smokers and healthy subjects

Fernandes

Santos

2017

F1000Res

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“…D-15 og L-D15 ble kun benyttet på Kasus 1, og da før ChromaGen-filter/-kontaktlinse ble tilpasset. Dersom forsøkspersonen har normalt trikromatisk syn, er forventede maksimalverdier på CCT trivektortesten 100 (protan), 100 (deutan) og 150 (tritan) langs de ulike forvirringsaksene (Mollon & Regan, 2000;Regan, Reffin, & Mollon, 1994;Ventura et al, 2003). Anomaloskopet ble benyttet for å bekrefte, klassifisere og gradere kasusenes fargesynssvakheter og ble også kun benyttet før ChromaGen-filter/-kontaktlinse ble tilpasset.…”

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Coloured filters will not give red-green colour deficient observers normal colour vision

Dees

Baraas²

2011

Scand J Optom Vis Sci

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There have been several reports over the last 200 years on how coloured filters might improve red-green colour deficient observersâ€™ ability to discriminate colours. Many red-green colour deficient observers have unrealistic expectations with regards to the effect of such filters after reading some of these accounts. This case report presents the accounts of three young men with red-green colour-deficiency who share an ambition to study for a profession that require normal trichromatic colour vision: shipmaster, chief officer and aircraft technician. ChromaGen filters were fitted monocularly and the three men were tested with a range of colour-vision tests. All three were classified as having a deutan colour-vision deficiency. The results from colour-vision testing with and without filters are discussed in relation to functional improvement and also in relation to ethical issues.

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“…O grupo de pesquisa coordenado pela Professora Dora Ventura, do Instituto de Psicologia da USP (SP), vem desenvolvendo inúmeras pesquisas com esse equipamento (62)(63)(64) .…”

Section: Outros Testes De Visão De Coresunclassified

Sentido cromático: tipos de defeitos e testes de avaliação clínica

Bruni¹,

Cruz²

2006

Arq. Bras. Oftalmol.

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Preliminary Norms for the Cambridge Colour Test

Cited by 52 publications

References 3 publications

Comparison of color discrimination in chronic heavy smokers and healthy subjects

Comparison of color discrimination in chronic heavy smokers and healthy subjects

Coloured filters will not give red-green colour deficient observers normal colour vision

Sentido cromático: tipos de defeitos e testes de avaliação clínica

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