Eye and Orbit 4

Question 1

what is the main embryological origin of the eye

Answer 1

neural tube (formed from the ectoderm)

Question 2

origin of the lens

Answer 2

lens vesicle, detaches from surface ectoderm

Question 3

origin of the choroid

Answer 3

mesenchyme around optic cup

Question 4

origin of the sclera

Answer 4

mesenchyme around optic cup

Question 5

origin of the retina

Answer 5

optic cup
10th layer - outer part of cup
inner 9 layers - inner part of cup

Question 6

origin of cornea and front of sclera

Answer 6

ectoderm layer left from lens vesicle detachment

Question 7

where is the choroid fissure

Answer 7

in the inferior wall of the optic cup

Question 8

retinal detachment

Answer 8

potential space between 9th and 10th layers is where retinal detachment occurs

Question 9

origin of eyelids

Answer 9

ectoderm