Blood supply of visual pathway

Question 1

What is the blood suply to the intracranial optic nerve? 2 sources

Answer 1

ophthalmic artery and pial branches of the hypophysial artery

Question 2

What is the relation of the ophthalmic artery to the intracranial optic nerve?

Answer 2

ophthalmic artery is an important inferior relation to the optic nerve

Question 3

What are 5 blood vessels that provide blood supply to the optic chiasma?

Answer 3

1. superior hypophysial artery
2. internal carotid
3. posterior communicating
4. anterior cerebral
5. anterior communicating

Question 4

What is the blood supply to the lateral root of the optic tract?

Answer 4

anterior choroidal artery

Question 5

What are 2 sources of blood supply to the lateral geniculate body?

Answer 5

1. anterior choroidal artery
2. branches of posterior cerebral artery

Question 6

What is the blood supply to the commencement of the optic radiation (geniculocalcarine tract)?

Answer 6

anterior choroidal artery

Question 7

What is the blood supply of the posteriorly directed fibres of the optic radiation?

Answer 7

lateral striate (deep optic) branch of the middle cerebral artery

Question 8

What is the blood supply of the termination of geniculocalcarine tract and visual cortex?

Answer 8

perforating branches of cortical arteries, principally the calcarine branch of the posterior cerebral although the middle cerebral may anastomose and aid in the supply of the cortex at the anterior end of the calcarine sulcus and at the posterior pole.

Question 9

Identify the key vessels that supply the visual pathway in the image.