If the photopigment levels in your eyes are extremely high, it is most likely a result of ____.
A) not eating enough carrots
B) being exposed to bright lights for a long time
C) being in a dark room for a long time
D) normal age-associated changes

Question

Quizplus · Accepted Answer

Photopigment levels in the eyes increase in response to being in a dark environment for a prolonged period of time, as the eyes attempt to adjust to the low light conditions. This is known as dark adaptation. Eating carrots is often associated with improving vision due to their high levels of vitamin A, which is important for maintaining healthy eyes, but it would not directly affect photopigment levels. Bright lights can cause temporary bleaching of photopigments, but this would not result in extremely high levels. Age-associated changes in the eyes can affect vision, but again would not necessarily result in extremely high photopigment levels.

If the Photopigment Levels in Your Eyes Are Extremely High