Verywell Health on MSN1 年
Pupil Function and Disorders Affecting How They Work
Medically reviewed by Christine L. Larsen, MD The pupil is the opening located in the center of the iris of the eye. It ...
BBC4 年
What can happen when organs & control systems stop working?
Controls how much light enters the pupil. Pupil Hole in the middle of the iris. Allows light to pass through as it enters the eye. Lens Transparent, bi-convex, flexible disc behind the iris.