2006-12-01 01:34:33 · 12 answers · asked by mostafa m 1 in Science & Mathematics ➔ Biology
You need the binocularity in order to gauge depth and distance properly
2006-12-01 01:38:23 · answer #1 · answered by Anonymous · 1⤊ 0⤋
Actually, vision is split down the middle by a vertical line and half of what each eye "see" is sent to the left and right brains. The view from each eye is slightly different giving the perception of 3-D like the old View-master discs using two photos for each image. Different layers of brain tissue must meld the views into a single picture providing depth of field. Chickens (prey) have eyes on both sides of their heads to spot predators and predators (mountain lions) have two eyes facing forward (like human predators?) to judge the distance to prey. Eyes are located and numbered to enhance survival.
2006-12-01 01:55:41 · answer #2 · answered by Kes 7 · 0⤊ 0⤋
Having two eyes gives us depth perception. Each eye gets a slighly different view. Our brain takes the image and allows us to perceive distance by this method. Funny how God knew what He was doing...
2006-12-01 01:38:17 · answer #3 · answered by Dino4747 5 · 1⤊ 0⤋
Depth perception. If we had one eye, we would see everything in the same focus and not be able to tell how far away it is. IT would be like a photograph.
2006-12-01 03:02:33 · answer #4 · answered by Kevin S 3 · 0⤊ 0⤋
We need 2 eyes in order to judge distance.
2006-12-01 01:37:37 · answer #5 · answered by Anonymous · 0⤊ 0⤋
It's a product of evolution. Stereo vision (two eyes) lets us perceive how far away things are; it was probably good for hunting. Plus if one is injured, there's a backup.
2006-12-01 01:37:13 · answer #6 · answered by Gene 7 · 1⤊ 0⤋
Not if you want binocular vision and depth perception. Although its not as limiting today it would certainly have hampered the early homo sapien hunter to only have one eye.
2006-12-01 01:38:00 · answer #7 · answered by gogs 2 · 1⤊ 0⤋
well some ppl say, we've gone through the evolutionary "test" and have come through that tunnel with two eyes. Which meant that this was most favorable conidtion for us.
2006-12-01 01:36:25 · answer #8 · answered by kcbm 3 · 0⤊ 0⤋
You need two eyes to have true depth perception.
2006-12-01 01:36:16 · answer #9 · answered by Anonymous · 0⤊ 0⤋
here is an interesting discussion on monocular and binocular cues. both have different perceptions. monocular (one eye )cues are special for certain things but if you don't have two eyes binocular cues won't be as good.
2006-12-01 01:39:57 · answer #10 · answered by ? 2 · 0⤊ 0⤋