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Latest Kevin van Doorn Stories

Snake Eyes: Threats Cause Change In Blood Flow To The Eyes In Snakes
2013-11-05 04:13:07

April Flowers for redOrbit.com - Your Universe Online Snakes can optimize their vision when they perceive a threat by controlling the blood flow to their eyes, according to a new study from the University of Waterloo. The coachwhip snake's visual blood flow patterns change depending on what is in its environment, according to Kevin van Doorn, PhD, from the School of Optometry & Vision Science, and Professor Jacob Sivak, from the Faculty of  Science. “Each species' perception...

2013-10-31 10:38:41

When Kevin van Doorn found himself setting up an experiment to investigate how snakes' eyes are able to focus at the beginning of his PhD in Jacob Sivak's lab at the University of Waterloo, Canada, he noticed something rather unusual: the bright light beam from the equipment lit up the eye from behind and revealed an array of tiny blood vessels branching their way across the transparent skin covering the snake's eye. This see-through skin, called the spectacle, is found in all snakes and is...


Word of the Day
lunula
  • A small crescent-shaped structure or marking, especially the white area at the base of a fingernail that resembles a half-moon.
This word is a diminutive of the Latin 'luna,' moon.
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