Question

Blind spot of the eye is devoid of the ability of vision. Give reason

Answer 1

Answer:

Blind spot is the region present on the inner layer of the wall of the eyeball called retina. Retina is the nervous  layer of the eyeball and contains two types of photoreceptor cells, namely, rods and cones. These cells contain  the light-sensitive proteins called the photopigments. Blind spot is that region of the retina at which the  photoreceptor cells, i.e., rods and cones are absent. Due to absence of the rods and cones, which are  responsible for the twilight vision and daylight vision, respectively; the blind spot is devoid of the ability of vision.  

Hence, no image is formed at the blind spot. This is because of this reason that no image is formed at this  point, this region is called the blind spot. There is no role of blind spot in the image formation but this is the  region from where the optic nerves leave the eyes and the retinal blood vessels enter the eyes.

Answer 2

Answer:

Blind spot is the region present on the inner layer of the retina.retina's outermost layer called as photo receptor cell. Which consists of cones and rods.this is responsible for daylight vision and twilight vision.in absence of cones and rods blind spot of the eye is devoid of the ability of vision. As a result no image formation....

Explanation: