25 Pupil
Pupil
- Black circle, center
- allow light signal to go through lens
Iris
- sphincter: circular muscle, when contract decrease diameter
- dilator: radially oriented; fibers sticking out from center; increase size
Function
Miosis
- when eye down and out, evaluate pupillary dilation to see if parasympathetic intact
Adie's tonic pupil
- dilated pupil on one side
Mydriasis
