Which of the following best describes consensual reactivity of the pupils?
A) It is a pathological phenomenon. When a penlight is shone into one eye, both pupils constrict.
B) It is a normal phenomenon. When a penlight is shone into one eye, only that pupil will constrict, while the other pupil is unaffected.
C) It is a normal phenomenon. When a penlight is shone into one eye, both pupils constrict.
D) It is a pathological phenomenon. When a penlight is shone into one eye, only that pupil constricts, while the other pupil is unaffected.

Question

Quizplus · Accepted Answer

Consensual reactivity of the pupils refers to the normal phenomenon where both pupils will constrict when a penlight is shone into one eye. This is because the constriction of one pupil is controlled by both the parasympathetic and sympathetic nervous systems, so when one pupil constricts, the other will also constrict due to communication between the two sides of the brain. Therefore, option C is the correct answer.

Which of the Following Best Describes Consensual Reactivity of the Pupils