where is the blind spot is present?and function of blind spot?

There is a point on the retina where the optic nerve joins in. This point is known as blindspot. It do not have color or light receptors at all.

@Monu:- Good answers, keep posting!!

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 A particular blind spot known as the blindspot, or physiological blind spot, or punctum caecum in medical literature, is the place in the visual field that corresponds to the lack of light-detecting photoreceptor cells on the optic disc of the retina where the optic nervepasses through it.[1] Since there are no cells to detect light on the optic disc, a part of the field of vision is not perceived. The brain interpolates the blind spot based on surrounding detail and information from the other eye, so the blind spot is not normally perceived.

The blind spot is located about 12–15° temporal and 1.5° below the horizontal and is roughly 7.5° high and 5.5° wide.

hope this helps

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