Anatomy
The Pupil and Iris
The iris is the colored part of your eye. The pupil is the black opening in the center that lets light in.
Anatomy Overview
The Pupil and Iris
Structure & Components
Pupils adjust to light
Iris shows eye color
Light response normal
Pupils get bigger and smaller
Responds to focus
Beautiful eye appearance
Functions & Physiology
Iris muscle controls pupil
Muscles contract and relax
Pupil gets bigger in dim light
Pupil gets smaller in bright light
Automatic response
Protects retina from damage
Key Points
Keep pupils functioning normally
Avoid sudden bright light
Gradual light adaptation helps
Sunglasses reduce pupil strain
Rest from bright light
Normal function is healthy
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