a: pupil ~
b: aperture of the camera

What:

"The pupil is like the aperture of the camera, and the iris is the diaphragm that regulates the amount of light allowed to enter the eye."


Useful?
Writer: Walter F. Boron, ‎Emile L. Boulpaep
LCC:
Where:
Date: Jan 1 2017 11:31 AM


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