Why does the human retina have a blind spot?
A)That point is the border between the area with cones and the areas with rods.
B)The pupil casts a shadow over the retina at that point.
C)The optic nerve exits from the retina at that point.
D)Exposure to bright lights quickly damages that point in the retina.

Question

Why does the human retina have a blind spot?​
A)That point is the border between the area with cones and the areas with rods.
B)​The pupil casts a shadow over the retina at that point.
C)​The optic nerve exits from the retina at that point.
D)​Exposure to bright lights quickly damages that point in the retina.

Quizplus · Accepted Answer

The optic nerve exits from the retina at the point where the blind spot is located. This is because the optic nerve carries the nerve impulses from the retina to the brain for visual processing, and it needs to physically exit the eye at some point. Where it exits, there are no photoreceptor cells to detect light, hence creating a blind spot in our vision.

Why Does the Human Retina Have a Blind Spot?​

Why Does the Human Retina Have a Blind Spot?