Saturday, February 27, 2010

Why is vision clearest where the image falls on the fovea centralis?

And why is vision in dim light better out of the corners of the eyes than when the eyes look directly at an object?Why is vision clearest where the image falls on the fovea centralis?
Vision is most distinct in the daytime in the fovea centralis because we have the most cones there. Cones are responsible for our amazing color vision. As we get further away from the center the cones become less dense and the rods become more dense. Rods are what give us night time vision.





This layout is what gives humans some of the best vision on the planet. One interesting aspect of this blend of eyesight is that on a dark starry night, if we look at a star, that star will disappear until we look slightly away from it, then it will reappear. Most animals only have the ability to see either in the day or the night, but not both.Why is vision clearest where the image falls on the fovea centralis?
You do know you entered this question in Geography?





Perhaps your have a detached retina and as a result couldn't read the subject headings...?





BAM! put your glasses on!

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