Eyeball Development: Optic Vesicle

Question 1

Eyeball development

Answer 1

1. Optic vesicle
2. Lens
3. Retina
4. Vitreous body
5. Eyeball coats
6. Iris
7. Eyelids

Question 2

Optic vesicle development

Answer 2

Eyeball develops as hollow diverticulum (optic vesicle) which arises from ventrolateral part of prosencephalon cranial end

Question 3

Optic vesicle elongates

Answer 3

1. Proximal part: remains narrow to form optic stalk
2. Distal blind end: expands and comes in contact with surface ectoderm, it becomes invaginated and converted into optic cup which consists of two layers: outer and inner separated by intraretinal space

Question 4

Optic cup edge

Answer 4

Deficient ventrally and this deficiency extends along ventral aspect of optic stalk form groove (choroidal fissure) inside which hyaline artery runs forwards as far as optic cup concavity to end in fetal lens

Question 5

Choroidal fissure

Answer 5

Becomes closed by approximation and fusion of the lips

Question 6

Optic stalk

Answer 6

Becomes optic nerve

Question 7

Hyalomere artery

Answer 7

Becomes central retinal artery