Blind spot, the point where optic nerve fibers converge?

• A. Optic disk (papilla)
• B. Rods and cones
• C. Choroid
• D. Aqueous humor

Answer: (A)

The blind spot is the optic disk, also called the papilla. This is the spot on the retina where the retinal ganglion cell axons converge to form the optic nerve and exit the eye. Because no photoreceptors (rods or cones) are present there, light hitting this area isn’t detected, creating a small gap in vision.

Rods and cones are the photoreceptors scattered around the retina (with high density in the macula for sharp, color vision and low-light vision elsewhere). The choroid is the vascular layer supplying the outer retina, not involved in the blind spot. Aqueous humor is the clear fluid in the anterior chamber that helps maintain pressure and eye shape, unrelated to the blind spot.