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Bookmark or Share- Pupil - Definition and Detailed Illustration - All About VisionPupil Definition. The pupil is the opening in the center of the iris (the structure that gives our eyes their color). The function of the pupil is to allow light to enter the eye so it can be focused on the retina to begin the process of sight. Typically, the pupils appear perfectly round, equal in size and black in color.
- Eye Anatomy: Parts of the Eye and How We SeeBehind the anterior chamber is the eye’s iris (the colored part of the eye) and the dark hole in the middle called the pupil. Muscles in the iris dilate (widen) or constrict (narrow) the pupil to control the amount of light reaching the back of the eye.
- Pupil - WikipediaThe pupil is a hole located in the center of the iris of the eye that allows light to strike the retina. It appears black because light rays entering the pupil are either absorbed by the tissues inside the eye directly, or absorbed after diffuse reflections within the eye that mostly miss exiting the narrow pupil.
- Anatomy of the Eye - Verywell HealthThe pupil is the hole or opening that is located in the center of the iris of the eye. The pupil controls the amount of light that enters the eye. Pupil size is controlled by the dilator and sphincter muscles of the iris. The pupil's job is very similar to a camera aperture which allows more light in for more exposure.
- How the Eyes Work | National Eye InstituteLast updated: April 20, 2022. All the different part of your eyes work together to help you see. Learn the jobs of the cornea, pupil, lens, retina, and optic nerve and how they work together.
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