Which structure regulates the amount of light entering the eye?

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Quizplus · Accepted Answer

The pupil regulates the amount of light entering the eye.The ciliary body is an anterior extension of the uveal tract; it siphons serum from the systemic blood flow to produce the aqueous humor needed to nourish the corneal endothelium.The transparent lens serves as a refracting medium,keeping a viewed object in continual focus on the retina.Its thickness is controlled by the ciliary body.The lens bulges for focusing on near objects and flattens for far objects.The retina contains a high concentration of rods which provide dark and light discrimination and peripheral vision.

Which Structure Regulates the Amount of Light Entering the Eye