Q12. Distinguish between:
(d) blind spot and yellow spot
Blind Spot |
Yellow Spot |
1. It is the point on the retina at which the optic nerve leaves the eye and retinal blood vessels enter the eye. |
1. It is the point on the retina which lies exactly opposite the centre of the cornea. |
2. It is void of photoreceptor cells. |
2. It contains two kinds of photoreceptor cells-rods and cones. |
3. It is insensitive to light. |
3. It is very much sensitive to light. |
4. It has no function with respect to vision. |
4. It is the area of most distinct vision. |