Optic Flashcards Preview

Neurology- Cranial Nerves > Optic > Flashcards

Flashcards in Optic Deck (7)
Loading flashcards...
1

What base of skull foramina does the optic nerve pass through? Within which cranial fossa is this found?

The optic canal / middle

2

What type of information is carried in the optic nerve?

Special sensory

3

What is the function of the optic nerve?

Vision

4

Describe the extracranial pathway of the optic nerve?

Sensory receptors (rods and cones) in the retina transmit visual information posteriorly via the optic nerve to the cortex

5

Describe the intracranial pathway of the optic nerve once it has passed through the optic canal?

Travels around the pituitary stalk to the optic chiasm to form the optic tract

6

Although the optic nerve is a cranial nerve, it is actually part of the CNS for what two reasons?

The axons are myelinated by oligodendrocytes and it is wrapped in meninges

7

What are the 5 ways of testing the optic nerve?

Visual acuity, colour vision, visual fields, pupillary light reflexes and fundoscopy