Psych M.D. - Pupil


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Term: Pupil
Definition (Myers): the adjustable opening in the center of the eye through which light enters. (p.201)
Definition (alternative): 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. *
Contextual explanation: The light passes through the pupil, a small adjustable opening. The pupil's size, and therefore the amount of light entering the eye, is regulated by the iris, a colored muscle surrounding the pupil.
Related terms and concepts: Lens, Accommodation, Retina, Acuity, Nearsightedness, Farsightedness
Psych M.D. - Pupil - The NeuronPsych M.D. - Pupil - The Neuron

Related websites: Pupil, Pupil - eye anatomy
Edited by: Jessica



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