Question

explain how retina send images to the brain and how brain the helps in producing a sense of vision

Answer 1

Retina helps to send the image to the brain using optic nerves.Optic nerves conduct some volts of electricity and further conduct the images to the brain.
When the brain receives the images it is fast enough to convert them into a vision in a fraction of second.

Answer 2

The retina has a large no. of light sensitive cells.when the image falls on the retina these light sensitive cells get activated and generate electric signals.The retina send these electric signals to the brain through the optic nerve and give rise to the sensation of vision.Although the image formed on the retina is inverted, our mind interpret the image as that of an erect object.