Eyesight diagram

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Pupil Diameter. Pupillary constriction decreases the diameter of the pupil to reduce the amount of light entering the ey… | Eye anatomy, Eye facts, Eye health facts

Pupil Diameter. Pupillary constriction decreases the diameter of the pupil to reduce the amount of light entering the eye. Pupillary constriction is controlled by the parasympathetic division of the ANS. Pupillary dilation increases pupil diameter to increase light entry into the eye and is controlled by the sympathetic division.

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