Question

Depression in retina which has cones only is

• A. Blind spot
• B. Fenestra rotunda
• C. Fovea centralis
• D. Fenestra ovalis

Answer 1

The correct option is C Fovea centralis

A. Blind spot is the region of eye where cones and rods are absent and vision is nil.

B. Fenestra rotunda is known as round window. It is a small opening in the middle ear.

C. Fovea centralis is a central cavity of macula lutea which is a yellowish pigmented spot present laterally to the blind spot. Visual resolution is maximum at fovea because it ha only cones (photoreceptor cells associated with coloured vision of eye).

D. Fenestra ovalis is known as oval window. It is also a small opening in the middle ear.

So, the correct answer is 'Fovea centralis'.