نتایج جستجو برای: color vision deficiency

تعداد نتایج: 373666  

2016
Dipa Saha Kaushik Saha

Objective: Colour vision is a function of three types of cone pigments present in retina. Any abnormality in the cone pigments may cause deficiency of colour vision which is called as colour blindness. The incidence of Colour vision deficiency varies from race to race and different in different geographical areas. Colour is very important sign used in medical profession, but there is no effecti...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2009
Joseph Carroll Rigmor C Baraas Melissa Wagner-Schuman Jungtae Rha Cory A Siebe Christina Sloan Diane M Tait Summer Thompson Jessica I W Morgan Jay Neitz David R Williams David H Foster Maureen Neitz

Missense mutations in the cone opsins have been identified as a relatively common cause of red/green color vision defects, with the most frequent mutation being the substitution of arginine for cysteine at position 203 (C203R). When the corresponding cysteine is mutated in rhodopsin, it disrupts proper folding of the pigment, causing severe, early onset retinitis pigmentosa. While the C203R mut...

Journal: :Vision Research 2012
Rigmor C. Baraas Lene A. Hagen Elise W. Dees Maureen Neitz

Five mutations in the S-cone-opsin gene (OPN1SW) that give rise to different single amino-acid substitutions (L56P, G79R, S214P, P264S, R283Q) are known to be associated with tritan color-vision deficiency. Here we report a sixth OPN1SW mutation (T190I) and the associated color vision phenotype. S-opsin genotyping and clinical evaluation of color vision were performed on affected and unaffected...

Journal: :Archives of ophthalmology 2000
M Neitz J Neitz

Color is an extremely important component of the information that we gather with our eyes. Most of us use color so automatically that we fail to appreciate how important it is in our daily activities. It serves as a nonlinguistic code that gives us instant information about the world around us. From observing color, for example, we can find the bee sting on an infant's arm even before it begins...

2014
Michael A. Webster Andrew J. Elliot

2004
Nelda J. Milburn

This report chronicles several experiments the Civil Aerospace Medical Institute has conducted to assess the effects that advances in technology have had on automated flight service station air traffic control specialists color identification tasks and the ensuing revisions to the color vision standard and verification testing.

2006
Jing Xing David Schroeder

This report describes the status of color use in current air traffic control (ATC) displays. It represents the first step in our effort to reexamine the color vision standards for air traffic controllers. The current job-related color vision tests used by the FAA are based on an analysis of ATC tasks conducted in the 1980s. Over the past decade, many color displays have been introduced while th...

Journal: :Topics in cognitive science 2017
Alex Byrne David R. Hilbert

This paper critically examines color relationalism and color relativism, two theories of color that are allegedly supported by variation in normal human color vision. We mostly discuss color relationalism, defended at length in Jonathan Cohen's The Red and the Real, and argue that the theory has insuperable problems.

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