Answers

2015-10-01T20:32:39+05:30
retina is present on the back of the eyeball that contains sensitive cell sensitive to the eyes.in retina visual images are formed.which trigger nerve impulses that pass through by the optic nerve.
                                 i hope that this will help u.
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2015-10-01T20:49:33+05:30
Retina is the layer in which the lights of the objects seen are screened, from where the light is changed into certain chemicals, and through the optic nerve, they are sent to the visual centers. Just, think the retina as a screen.
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