Eyeball Development: Iris

Question 1

Iris superficial layer

Answer 1

Covered on superficial aspect by iridopupillary membrane which is at first a continuous sheet, but later on, becomes perforated in its center to form eye pupil

Question 2

Iris deep layer

Answer 2

Iris deep pigmented layer is derived from retina iridial part

Question 3

Dilator and sphincter pupillae origin

Answer 3

Ectoderm