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In Biology / Middle School | 2014-02-19

What is the blind spot of the eye? Explain it.

Asked by abhishekdas

Answer (2)

A blind spot, scotoma, is an obscuration of the visual field . A particular blind spot known as the blind spot, physiological blind spot, "blind point", 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 nerve passes through the optic disc. 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.

Although all vertebrates have this blind spot, cephalopod eyes, which are only superficially similar, do not.
In them, the optic nerve approaches the receptors from behind, so it does not
create a break in the retina.

Answered by pasha | 2024-06-10

The blind spot of the eye is an area on the retina lacking photoreceptor cells where the optic nerve exits, resulting in an area we cannot see. Our brains compensate for this missing information by filling it in with surrounding details when both eyes are open. This phenomenon demonstrates the impressive adaptability of our visual system.
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Answered by pasha | 2024-11-03