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Old 06-22-2014, 02:52 AM   #11
meeera
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Quote:
Originally Posted by BookCat View Post
That vaguely calls to mind something I was taught, many eons ago, in human biology class: that the eye sees light better if you look just to the side of it. Something to do with there being strong light perceptors (are they rods or cones, I can never remember which is which?) in one corner of the retina.

But that was "centuries" ago, so don't quote me.
Hah! I quoted you!

Yup, the fovea, right in the middle of the line of vision, has only cones (colour perception, work best in bright light), no rods (dim light/movement). This is why you have to look just to the side of the spot you want to look at, if you want to see very very dim stars.
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