Question

In human eye, fovea is the central pit of macula lutea where

• A. only rods are present
• B. only cones are present
• C. optic nerve leaves the eye
• D. cones are more than rods.

Answer 1

The correct option is B only cones are present

Fovea is the central pit of the yellowish pigmented spot called macula lutea present at the posterior pole of the eye lateral to the blind spot. It is a thinned-out portion of the retina where only cones are present and are densely packed. It is the point where the visual acuity (resolution) is the greatest.
The optic nerve leaves the eye and the retinal blood vessels enter and leave it at a point medial to and slightly above the posterior pole of the eyeball. This point is called the blind spot. Photoreceptor cells are not present in the blind spot.