- Pupil refers to the dark circular opening in the center of the iris of the eye.
- It controls the amount of light entering the eye by shrinking or dilating in response to surrounding light conditions.
- This is achieved through the action of the iris muscles, allowing the pupil to constrict or expand accordingly.
- Pupil size not only regulates the amount of light reaching the retina but is also influenced by various emotions and neurological factors.
- Eye examinations often involve the measurement and evaluation of pupil size and reaction, which can provide insights into overall eye health and conditions affecting the nervous system.
