Although she is normally not aware of its existence,Ingrid discovers that she has a blind spot in her vision by closing one eye and focusing on a fixed point.What explains why Ingrid has this blind spot in her vision?
A)She is likely suffering from severe retinal degeneration.
B)She is experiencing sensory adaptation.
C)No photoreceptors are located where the optic nerve leaves the eye.
D)She has likely suffered damage to her occipital cortex.

Question

Quizplus · Accepted Answer

The blind spot in Ingrid's vision is due to the fact that there are no photoreceptors (rods or cones) located where the optic nerve exits the eye. This is a natural occurrence in all human eyes and is not related to retinal degeneration or damage to the occipital cortex. Sensory adaptation refers to a decrease in sensitivity to a stimuli over time, and is not relevant to Ingrid's blind spot.

Although She Is Normally Not Aware of Its Existence,Ingrid Discovers