In optical terms, the anatomical pupil is the eye's aperture and the iris is the aperture stop. The image of the pupil as seen from outside the eye is the entrance pupil, which does not exactly …

1 day ago · A pupil is the opening created by the iris, which controls the amount of light that enters the eye. Learn about medical conditions affecting the pupils.

The pupil of your eye, the black hole in your iris, works with the lens to send light to the retina, where it becomes electrical signals sent on to the brain through the optic nerve.

pupil, in the anatomy of the eye, the black centre opening within the iris through which light passes before reaching the lens and being focused onto the retina.

: the usually round opening in the iris that contracts and expands to control the amount of light entering the eye.

A pupil is one under the close supervision of a teacher, either because of youth or of specialization in some branch of study: a grade-school pupil; the pupil of a famous musician.

Feb 27, 2019 · 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 …

n. The apparently black circular opening in the center of the iris of the eye, through which light passes to the retina. [Middle English, from Old French pupille, from Latin pūpilla, little doll, …

May 26, 2023 · The opening at the center of the iris that allows light to enter the eye.

Oct 30, 2023 · Structure of the eyeball seen in a transverse section. The pupil is the small black circle located in the center of the eyeball. Surrounding the pupil is the colored part of the eye, …