DEVELOPMENT OF THE EYE MILESTONES

Embryonic and fetal period

Stage of growth   ::   Development

2.6 mm (3 weeks)           Optic pits appear on either side of cephalic end of forebrain.

3.5 mm (4 weeks)           Primary optic vesicleinvaginates.

5.5 to 6 mm

iris eye , vitreous eye , eyelid anatomy

Iris

• Both layers of epithelium are derived from
  the marginal region of optic cup (neuroectodermal)
• Sphincter and dilator pupillae muscles are
  derived from the anterior epithelium (neuroectodermal).
• Stroma and blood vessels of the iris develop
  from the vascular mesenchyme present anterior
  to the optic cup.

Vitreous
1. Primary or primitive vitreous is mesenchymal in
origin and is a vascular structure having the
hyaloid system of vessels...