Eyeball Develpment: Retina

Question 1

Retina development

Answer 1

Develops from 2 layers of optic cup:
1. Inner layer
2. Outer layer

Question 2

Inner layer

Answer 2

1. Directed towards cup concavity
2. Much thickened to fork retina nervous layer (pars optics retinae) which gives rise to:
   - rods and cones
   - bipolar cells
   - ganglionic cells

Question 3

Outer layer

Answer 3

1. Directed away from cup concavity
2. Remains single cell thick
3. Becomes pigmented and forms retina pigmented layer

Question 4

Formation of iris and ciliary body by retina

Answer 4

Near cup edge, peripheral 1/5 of retina inner layer contributes to the formation of iris and ciliary body

Question 5

Inner and outer layers are first separated by?

Answer 5

Space (intraretinal space) which is rapidly obliterated by fusion of the 2 layers