The Eye

The iris reflex is for adjusting the iris when the has enviroment is bright light.

Bright light- the circular muscles contract and the raial muscles relax to make the iris smaller so that the least amount of light can get in.

Dim light- Radial muscles contract and circular muscles relax and the iris widens to let the most light in as possible.

Correcting Vision:

Looking at close objects- Ciliary muscle tightens which means the suspensory ligament will relax, the les becomes fatter which increases the amount of light it refracts.

Looking at distant objects- ciliary muscles relax and…