when you look at an object how does the information reach your brain?
Answers
When we look at an object, light rays from every part of the object enters into the eyes, the light rays then pass through the cornea, the aqueous humour, lens and vitreous humour, the light rays are bent and image is formed on the retina.
the vitreous humour converts the light rays to electrical impulses , before reaching the retina to stimulate the rods and cons to invert the image. the retina views images in an inverted form and not the actual size. the electrical impulses pass through the optic lobe which transmits it to the optic fibre to send impulses to the brain.
from the optic fibre the impulses are sent to the vision centre cerebral hemisphere where the image is formed and the real size and colour of the image is seen. images are formed and seen properly when they fall on the fovea centralis. note that images on the retina are smaller but we see the images as the actual size