Men are more likely to have color vision defects than women. One out of every 12 males has some form of color deficiency, but only one out of every 255 females is affected.
A color vision defect doesn't mean you're color blind. There are varying degrees of color blindness, and some people may not be color blind at all. They simply have a tougher time distinguishing various hues than someone with sharper color acuity.
Color vision can indicate certain medical conditions. The Farnsworth-Munsell 100 Hue Test is one of the most widely used tests in industries where color decisions are critical. The test has been used in clinical applications for the study of ocular disease and other medical conditions such as diabetes and Parkinson's disease. It's also used tot determine the affects of pharmaceuticals on color vision.
Industry Standards regarding visual Color evaluation: You can find Information for the standardization of Color evaluation practices and Evaluating observers in these industry standards.
ASTM Standard E1499-97(2003) Standard Guide for Selection, Evaluation and Training of Observers
ASTM Standard D1729-96(2003) Standard Practice for visual Appraisal of Colors and Color difference of Diffusely -Illuminated Opaque Materials.
ASTM E 1478-97 Standard Practice for Visual Color Evaluation of Transparent Sheet materials
AATCC EP9-2002 Visual Assessment of Color Difference of Textile
SPI PB-1 Visual Evaluation of Reflected Color
SAE J 361 Procedure for Visual Evaluation of Interior and Exterior Automotive Trim
TAPPI T515 OM-04 Visual Grading and Color Matching of Paper
Vision Tests: The use of Color Vision tests is appropriate for being able to judge the validity of an individual as being qualified for a specific position. Color Vision tests come in a variety of types and kinds.
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