Embryology - Development of the Eye Flashcards
1
Q
What structures arise from the optic vesicle?
A
Retina, iris and ciliary body
2
Q
How do the lens and cornea develop?
A
Optic vesicle grows out towards surface ectoderm and interacts with it via signalling molecules.
- Ectoderm thickens –> lens placode
- Optic vesicle and lens placode sink down
- Ectoderm closes over top –> cornea
3
Q
How do the eyes move from the side of the head to the front?
A
Maxillary prominences grow towards midline dragging eyes with them
4
Q
What is cyclopia?
A
Single midline eye
5
Q
What is it called if a foetus has no eyes?
A
Anophthalmia
6
Q
What is the 1st stage of eye development?
A
- Outgrowths of forebrain –> form optic vesicle
