Labels:amusement park | bulletin board | line OCR: PUPIL SIZE OUR PUPIL IS the black hole in light, the sympathetic nervous the center of your eve through system enlarges the pupil, that which light passes. Under the as much light as possible can pass control of the autonomic nervous into your eve In bright light, the system your pupil size changes parasympathetic system makes automatically to adjust the amount the pupil smaller, T that the light of light that enters the eye. In dim does not dazzle you. Inner iris muscles These contract in bright light to reduce the size of the pupil Pupil Outer iris muscles Iris These contract in dim light to increase the size of the pupil How your pupil changes size PUPII SIZF
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