How well can cats see in the dark? ? - Yahoo! Answers

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Gabe Gabe

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January 04, 2008
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** How well can cats see in the dark? ? **

I think its so awesome to look out in the dark and see the cats eyes in the
midst lol. but how


Source: answers.yahoo.com/question/index?qid=20090104192530AA9yzh4


can cats see in the dark


In a Cat's Eyes - Why Cats See Better at Night, Page 2

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** In a Cat's Eyes **

*Part 2: Why Cats See Better at Night*

By Franny Syufy, About.com Guide

"Diagram of a Cat's Eye"

Diagram of a Cat's Eye

Franny Syufy
*See More About*

· cats' nocturnal vision
· tapetum ludicum
· cats' vision
· cats' eyes

(Continued from Page 1)
Cats' nocturnal vision is far superior to that of humans, however they
can't see in total darkness. They can see clearly with only one-sixth of
the illumination we need to see, so when you're trying to read that
newspaper at twilight, ask your cat for help! In the feline, the muscles of
the iris surrounding the pupils are constructed in a fashion that allows
the eye to narrow to a vertical slit in bright light and to open fully in
very dim light, to allow a maximum of illumination.

In addition, a reflective layer behind the cat's retina called the tapetum
lucidum reflects incoming light and bounces it back off the cones, making
more use of the existing light. The tapetum is probably responsible for the
fact that when a small amount of light hits a cat's eyes at night, you see
shiny green orbs.

These special feline features have probably developed for survival
purposes, as wild cats are nocturnal and do much of their hunting at night.

*Testing Cats' Eyes to Help Humans*

In 2000, a team of scientists at the University of California in Berkeley
used cats to learn more about human vision. During the controversial
experiment, the team, led by


Source: cats.about.com/cs/eyesvision/a/cats_eyes_2.htm

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