it has 1,500 photodiodes. >> charlie: 1500. 1,500.the image falls through the lens on to the chip and point by point the image is analyzed turned into an electric mirror image in the bipolar cells, they are stimulated point by point it processes the image and sends the image through the natural pathway of the optic nerve to the output of the retina, back to the central visual system where it is processed in a normal way. but now we have amplifiers there. >> charlie: yeah. they need current. how to do that. so what we see on the left is, again, the retina and the eye, and we put the chip right beneath the macular region, that's where we see the best and the brain has learned to see the things. and there is a tiny, yellowish vial going under the retina to the top of the eyeball, crossing the eye, getting out to to empower which goes back to a place behind the ear. but the first loop through on the right side to the retina. on the right is a roundish moon-like optic nerve. left of it is this grey area, a new window of the world to this p