Q.(a) What is the location of blind spot in human eye?

The blind spot is at the optic disc, the point on the retina where the optic nerve leaves the eye. Retina contains photoreceptor cells (rods, cones) that convert light into nerve impulses (phototransduction), forming...

Blind spot = optic disc; retina forms the image via rods (dim light) and cones (bright light); retinal (from vitamin A) is the visual pigment.

1. The blind spot is located at the optic disc, the region on the posterior retinal wall where the optic nerve fibres converge and exit the eyeball; since this point lacks any photoreceptor cells, no image can be formed there, creating a small "blind" area in the visual field of each eye.
2. The retina, the innermost layer of the eyeball, contains the photoreceptor cells (rods and cones) that detect incoming light and convert it (phototransduction) into electrical nerve impulses; these signals are relayed through bipolar and ganglion cells and carried via the optic nerve to the visual cortex of the brain, where the actual perception/formation of the image occurs — making the retina essential to vision. …