Eye Embryology - Acht Flashcards Preview

Neuro Block 3 > Eye Embryology - Acht > Flashcards

Flashcards in Eye Embryology - Acht Deck (15)
Loading flashcards...
1
Q

The optic cups go on to form what structures?

A

retina, optic nerve, ciliary body, iris

2
Q

What induces development of the eye?

A

Neuroectoderm

3
Q

The optic vesicles or evaginations will induce the development of what? (from surface ectoderm)

A

lens placode

4
Q

What happens to the hyaloid artery during development?

Abnormailites associated?

A

IT will completely disappear!

IF it does not disappear you get blurry vision

5
Q

What causes a congentital coloboma?

A

Defective closure of the choroid or optic fissure at anterior border

If it doesn’t close posteriorly then you get a missing part of the retina (Retinal coloboma)

6
Q

What eye structures does the neuroectoderm develop into?

A

Retina, iris, ciliary bodies

7
Q

The developmental intraretinal space is reformed when what eye pathology occurs?

A

retinal detachment

8
Q

Where does the lens get its fluid after the hyaloid arteries disappear?

A

ITs avascular and gets nutrients from the fluid in the eye chambers

9
Q

What acts on the mesoderm to create the anterior chamber of the eye?

A

The lens does!

10
Q

What does the lens placode develop into?

A

Lens pit, lens vesicle (as it invaginates into the surface ectoderm)

Then it will become the lens

11
Q

What does the outer layer of the optic cup become?

A

The RPE - Retinal Pigmented Epithelium

12
Q

What does the inner layer of the optic cup become?

A

The neural layer of the retina

AKA - rods, cones, ganglion cells. etc

13
Q

What muscles in the eye are an exception to the rule that muscles develop from mesoderm?

A

The Sphincter pupillae & dilator pupillae muscles are formed from the neuroectoderm of the optic cup.

Say what????? Ya.

14
Q

What induces the formation of the sclera and choroid?

A

The RPE

15
Q

Anopthalmia/Micropthalmia

What is it???????

A

Rare disorder with one or two eyes absent or too small