Having to adjust to a dark room after walking in from bright light is because:

Question

Quizplus · Accepted Answer

When rods are exposed to bright light, the rhodopsin in them is quickly depleted. Rhodopsin is a pigment that is crucial for detecting dim light, and it takes time to regenerate. Therefore, when we enter a dark room after being in bright light, our eyes need time for rods to regenerate rhodopsin and for our visual system to adjust to the low light conditions. Option A is incorrect because the lens does not require time to accommodate dim light; rather, it changes shape to focus on objects at different distances. Option B is incorrect because rods are more sensitive to dim light than cones, and both types of photoreceptor cells are necessary for vision in dim light. Option C is incorrect because rhodopsin is responsible for vision in dim light, not bright light.

Having to Adjust to a Dark Room After Walking in from Bright