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Learn about the pupil, the central opening of the iris that regulates the amount of light entering the eye. Find out how the pupil changes size, shape, and color in response to various factors, such as light, drugs, diseases, and evolution.
Learn about the pupil, the black opening in the middle of your iris that controls how much light enters your eye. Find out what conditions and disorders can affect the pupil and how to keep your eyes healthy.
Learn about the pupil, the opening in the center of the iris that controls how much light enters the eye. Find out how pupil size, shape and function can be affected by various conditions and tested by eye doctors.
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 size of the opening is governed by the muscles of the iris, the coloured part of the eye. These muscles rapidly constrict the pupil
Learn the meaning of pupil as a student or an eye part, with examples of usage and pronunciation. Find out how to say pupil in different languages, such as Chinese, Spanish and Portuguese.
Human eye - Pupil, Iris, Retina: The amount of light entering the eye is restricted by the aperture in the iris, the pupil. In a dark room, a person's pupils are large, perhaps 8 mm (0.3 inch) or more in diameter. When the room is lighted, there is an immediate constriction of the pupils, the light reflex. This is bilateral, so that even if only one eye is exposed to the light, both pupils ...
Learn about the pupil, the small black circle in the center of the eye that regulates light entry. Find out how the pupil changes size, what muscles control it, and what sources and terms are related to it.
Learn about the anatomy, function, and variations of pupils, the openings in the iris that control light entry. Find out how to test pupil function and what medical conditions can affect pupil size and response.
Learn the meaning of pupil as a noun for a student or a part of the eye, and see synonyms, example sentences, word history, and related words. Find out the origin of pupil from Latin and French words for boy, girl, or doll.
The pupil is the black, circular opening in the center of the eye that allows light to enter and reach the retina. It appears black because most of the light entering the pupil is absorbed by the tissues inside the eye. The size of the pupil changes in response to light intensity, controlled by the iris muscles that dilate or constrict it. This regulation ensures the appropriate amount of ...