Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
21 Cards in this Set
- Front
- Back
|
Optic pit formation day
|
day 23
|
|
|
Optic vesicle formation day
|
day 25
|
|
|
lens placode formation day
|
day 27
|
|
|
closure of optic cups day
|
day 33
|
|
|
Abnormalities of optic cup closure
Is eyelid coloboma a failure of optic cup closure? |
faliure optic cup closure: coloboma of retina, choroid, iris, optic nerve, microphthalmos with cysts. Eyelid coloboma is NOT due to failure optic cup closure
|
|
|
hyaloid artery supplies?
|
primary vitreous
|
|
|
regression of hyaloid artery (months)
|
8.5months
|
|
|
Describe growth of retinal vasculature
|
growths out from ON, reach nasal first at 8months, then temporal
|
|
|
bergmeisters papilla
|
hyaloid remnant at ON
|
|
|
mitterndorf dot
|
hyaloid remnant at post lens (remnant of tunica vasculosa lentis
|
|
|
persistant pupillary membrane
|
remnant of tunica vascula lentis, seen as iris strands in pupil
|
|
|
when does myelination of ON complete?
|
1 mo after birth
|
|
|
Condition of optic n. hypoplasia
|
de-morsiers syndrome - ON hypoplasia, and agenesis of septum pellucidum, pituitary abnormaly
|
|
|
What forms primary vitreous ?
|
hyaloid A.
|
|
|
What forms secondary vitreous?
|
retina
|
|
|
What does tertiary vitreous form?
|
zonules
|
|
|
Structures from neural ectoderm
|
retina, RPE, non-pigmented CB epithelium, dilator and sphincter muscles, optic nerve
|
|
|
Structures from surface ectoderm
|
Lens, K epithelium, conj. epithelium, lid epithelium, lacrimal gland, nasolacrimal system
|
|
|
Structures from neural crest
|
K stroma, K endothelium, ciliary body stroma, iris stroma, chroid stroma, ciliary muscle, TM, orbit bones, sclera, tendon and sheath of EOM
|
|
|
Structures from mesoderm
|
vessel endothelium, blood, temporal sclera, EOM, schlem's canal
|
|
|
What does S-100 stain?
|
neural crest cells (nevi, melanomas, schwannomas, neurofibromas)
|
