A blind spot is a part of the visual field we can't see, where the _____________ connects to the_____________
A) retina; pupil
B) cornea; iris
C) optic nerve; retina
D) optic nerve; sclera
Answer: C
Rationale: Each eye has an optic nerve, a cluster of neurons that gather sensory information, exits at the back of the eye, and connect with the brain. This nerve presents a challenge to the brain. Because it travels through the back of the eye it creates an area in the retina with no rods or cones, called the optic disc. The result is a blind spot—a space in the retina that lacks photoreceptors.
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