Emmanuel enters a completely darkened room and lights a candle. Which of the following sequences best represents the candle's light as it enters his eye?
A) cornea-pupil-lens-retina
B) pupil-cornea-lens-retina
C) lens-cornea-pupil-retina
D) retina-pupil-lens-cornea

Question

Quizplus · Accepted Answer

The correct sequence for light entering the eye starts with the cornea, which first refracts the light. It then passes through the pupil, the opening whose size is adjusted by the iris to control the amount of light entering. Next, the light is further focused by the lens before finally hitting the retina, where photoreceptor cells convert the light into electrical signals for the brain to interpret.

Emmanuel Enters a Completely Darkened Room and Lights a Candle