vision Flashcards
1
Q
What is miosis/mydriasis? What muscles control each physiological process?
A
Miosis – constriction of radial muscles
Circular muscle of iris
Mydriasis – dilation of radial muscles
Radial muscle of iris
2
Q
What CN’s controls the pupillary reflex?
What does it mean when you have a consensual reflex?
How can you assess where the damage/affected nerve is?
A
CN II and III
Unilateral stimulus leads to bilateral response
Shine a light in one eye and see if both eyes constrict for each one. If nothing happens
then you have a problem in CN II. If you shine a light and only one eye constricts then
you have a problem with CN III.
