though we see an object with two eyes it appears as one. tell me how?

Answer 1

The answer to this question is a little more complicated than saying, "Binocular Vision". That's obvious. I'm not concerned with BEST ANSWER. I'm just going to show off with a little visual neuro-anatomy - Can I do that? First of all, did you know that you can have binocular vision in one eye? I could explain that, but I would lose you. Stick with me now. Light carrying an image strikes the eye & is refracted by the convex lens, such that the image is inverted upon the retina where millions of rods and cones are located, with the focus being on the fovea centralis. Is everybody still with me? The stimulation of the rods and cones is transmitted along the optic nerve. Now, here's where it gets funky. The left & right optic nerves merge to the midline and cross-over. This point of cross-over is called the optic chiasm. Wonderful things happen here. The optic fibers from each eye intermingle. Now, what used to be the L & R optic nerves are now the undifferentiated optic nerve bundles. Each bundle carries the image from both eyes. Now, we're getting to the nitty-gritty. Each bundle traverses the longitudinal plane of each respective hemisphere until it reaches the visual cortex of the brain. In the visual cortex, the image is re-inverted so now it is upright. This is what the conscious mind perceives. All this is thanks to the intermingling of L & R optic nerve fibers at the chiasm. Really simple, isn't it? Thank-you!...Thank-you!.

Answer 2

I'm not a scientist, but I think that we actually see two images, but the mind put them togher in one information: and what you see in this way it's not just an image as you had only one eye, because when you look to something with two eyes you have a "tridimensional" view, that give you the idea of perspective: this special view is the sum of the two distinct images from the two eyes.

Answer 3

Uh Sure , what Rudy said.

I can add that the brain does amazing processing of input as demonstrated in a test where the subjects were give 'glasses' that turned the world upside down visually. After extended periods of wearing the inversion spectacles, subject began to 'flip' the image in their brains, turning the world right side up again!

Answer 4

When an individual has good binocularity, the two images are FUSED as one, within the brain. In the absence of fusion, the individual will see two objects.

Answer 5

It's called binocular vision

http://en.wikipedia.org/wiki/Binocular_vision