Jack is asleep when his wife turns on the bedroom light and awakens him. Upon opening his eyes, Jack temporarily finds the bright light painful because ____.

Question

Quizplus · Accepted Answer

When we go from a dimly lit area to a brightly lit area, our eyes need time to adjust to the new level of illumination. This process is called light adaptation. It can take a few seconds for the photoreceptors in our eyes to adjust, during which time we might experience temporary discomfort or even pain from the sudden increase in light. This is why Jack finds the bright light painful when his wife turns on the bedroom light and awakens him.

Jack Is Asleep When His Wife Turns on the Bedroom