PUPIL REFLEX

The opening of the eye where light enters

• Retina

• Sclera

• Iris

• Pupil

• Lens

It controls the amount of light that enters the pupil.

• iris

• retina

• eyebrow

In bright light, your pupil will be

• larger
• smaller

In low light levels

• Radial muscles contract and circular muscles relax

• Radial muscles relax and circular muscles contract

• Radial muscles contract and ciliary muscles relax

• Radial muscles relax and ciliary muscles contract

Circular and radial muscles are responsible for ....

• Adjusting to distance.

• Accomodation.

• Adjusting to light.