Zusammenfassung der Ressource
Topic 5- The Iris Reflex
- What is the iris reflex?
- very bright light can
damage the retina so you
have the iris reflex to
protect the retina
- Bright Light
- Radial muscles of the iris relaxed
- Circular muscles of the iris contracted
- Contracted pupil (less light
enters the eye)
- Dim Light
- Radial muscles of the
iris contracted
- Circular muscles of the iris relaxed
- Dilated pupil (more light
enters the eye)