Question

There is a spot on the retina commonly called the “blind spot.” the blind spot exists because ________.

Answer 1

that is where the fibers of the optic nerve exit the eye extending into the brain. there are no rods and cones there as a result.

Answer 2

The correct answers - there are no photo-receptor in this spot and therefore no image detection.

Explanation:

Blindspot is a small part or region of the visual field of eyes on the retina which is also known as the optic disk or optic nerve head. In this portion, there is no rods or cones present which is photoreceptors that detect the image in the retina.

Blindspot is the region where the nerve fiber moves out from the back of the eye. Blindspot term is called a blind spot as it does not detect any image in this spot or portion of the retina.

Thus, the correct answer is - there are no photo-receptor in this spot and therefore no image detection.