
Pupil of the Eye: Definition, Anatomy & Function
Small pupils can happen when you’ve had a stroke or when you’ve used opiates, among other reasons. Mydriasis is the name of the opposite condition, having dilated pupils.
Pupil - Wikipedia
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 correspond to …
Pupil Function and Disorders That Affect It - Verywell Health
Apr 22, 2025 · The pupil is the opening located in the center of the iris of the eye. It controls the amount of light that enters the eye so that you can see clearly. The pupil size is controlled by muscles of the …
Pupil Transportation - Newark Board of Education
Transportation services for students with special needs who meet eligibility requirements, some of our schools’ athletic events and selected field trips are provided by contracted school bus companies …
PUPIL | English meaning - Cambridge Dictionary
All pupils are expected to attend school assembly. The government has pooh-poohed the idea that primary schools will begin to select pupils. The vast majority of pupils attend state-funded schools. …
Pupil | Iris, Optic Nerve & Retina | Britannica
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 …
Your Pupils and Eye Disorders, Nerve Problems, Concussion - WebMD
Dec 4, 2024 · Pupils are the dark-colored openings at the center of your eyes that let light in. Doctors can look at your pupils for clues about your health. The size of your pupils and how they react to...
What's Normal Pupil Size and When Do Pupils Change? - Healthline
Mar 28, 2019 · There's an average pupil size that's considered normal. Measured in millimeters, your eyes' pupils can change based on light, medications, and even emotions.
PUPILS Definition & Meaning - Merriam-Webster
The meaning of PUPIL is a child or young person in school or in the charge of a tutor or instructor : student.
Abnormal Pupil Size: Causes and Symptoms - Verywell Health
Oct 27, 2025 · Normal pupil size ranges between 1/16 to 5/16 of an inch (2.0 to 8.0 millimeters), depending on the lighting. 1. The size of your pupil can tell your healthcare provider quite a bit about …