loss of colour

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• colour blindness — Inability to distinguish one or more colours. The human retina contains three types of cone cells that absorb light in different parts of the spectrum. Absence of these types causes colour blindness to red, green, and blue. Colour blindness is a… …   Universalium

• colour-processing deficit —    A generic term for a group of visual phenomena characterized by a marked loss or alteration of colours attributed to a lesion affecting the sensory cortex and/or white matter. Due to a colour processing deficit, colours may either seem… …   Dictionary of Hallucinations

• Trooping the Colour — is a military ceremony performed by regiments of the Commonwealth and the British Army. It has been a tradition of British infantry regiments for centuries and it was first performed during the reign of Charles II. Since 1805 the ceremony has… …   Wikipedia

• Labrador Retriever coat colour genetics — The genetic basis of coat colour in the Labrador Retriever (a highly popular type of dog) has been widely studied, and found to depend on many genes. A wide range of colourings have developed over time.This article examines the current knowledge… …   Wikipedia

• Like Colour to the Blind — Infobox Book name = Like Colour to the Blind title orig = translator = image caption = author = Donna Willams cover artist = country = language = series = subject = genre = Autobiography publisher = Jessica Kingsley Publishers release date = 1998 …   Wikipedia

• Life Sciences — ▪ 2009 Introduction Zoology       In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… …   Universalium

• coloration — colorational, adj. colorationally, adv. /kul euh ray sheuhn/, n. appearance with regard to color arrangement or use of colors; coloring: the bold coloration of some birds. [1605 15; COLOR + ATION] * * * ▪ biology Introduction       in biology,… …   Universalium

• art conservation and restoration — Maintenance and preservation of works of art, their protection from future damage, deterioration, or neglect, and the repair or renovation of works that have deteriorated or been damaged. Research in art history has relied heavily on 20th and… …   Universalium

• S-Video — Infobox connector name=S Video type=Analog video connector logo= caption=A standard 4 pin S Video cable connector, with each signal pin paired with its own ground pin. designer= design date= manufacturer= production date= superseded= superseded… …   Wikipedia

• Distorted vision — is a symptom with several different possible causes.[1] Contents 1 Vitreous detachment 2 Uveitis 3 Entoptic phenomenon 4 …   Wikipedia

• aging — ag·ing (āʹjĭng) n. 1. The process of growing old or maturing. 2. An artificial process for imparting the characteristics and properties of age. * * * Gradual change in an organism that leads to increased risk of weakness, disease, and death. It… …   Universalium