Human eyes. The iris, a coloured muscular ring, regulates the amount of light that enters the eye through the pupil (black).

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Size: 6024px × 2954px
Photo credit: © Science Photo Library / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: anatomical, anatomy, biological, biology, close-, composite, detail, eye, eyes, group, human, iris, irises, pupil, pupils, sense, sight, vision, visual