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Pupil and iris

Pupil and iris

P424/0217

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Credit

RALPH EAGLE / SCIENCE PHOTO LIBRARY RALPH EAGLE / SCIENCE PHOTO LIBRARY

Caption

Epithelial frill surrounds the pupil, the opening of the iris. Iris muscles (dilator and sphincter) cause the pupil to dilate and constrict, regulating the amount of light that enters the eye. Enhancement of 5p7377.

Release details

Model release not required. Property release not required.

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