When you are in a moderately lit or dark room and walk into the bright sunshine outside,your eyes "hurt." What causes this phenomenon?
A) The rods begin making extra chemicals.
B) Rods and cones abruptly stop firing.
C) Rods and cones are highly sensitive and "overloading" the visual circuits.
D) Rods and cones lack sensitivity.

Question

Quizplus · Accepted Answer

When going from a moderately lit or dark room to bright sunshine, the rods and cones in the eyes are highly sensitive and can "overload" the visual circuits, causing discomfort or pain. This is because the eyes are not used to such a sudden increase in light intensity.

When You Are in a Moderately Lit or Dark Room