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Pediatric Optometry
Lecture 1
Ocular embryology
Mutez Gharaibeh,MD
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22/10……….
29/10……….
5/11…………
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19/11………. First
26/11……….
3/12…………
10/12……….
17/12……….
24/12……….
31/12……….
7/1………….. Second
14/1…………last date to deliver the report
22/1………… Final
► First
: 25 marks .
► Second : 25 marks .
► Report: 10 marks .( How to prescribe
eyeglasses in children ).
► Final : 40 ( 30+10 marks).
► 10 marks : evaluation.
http://www.med.unc.edu/embryo_images/u
nit-eye/eye_htms/eye016.htm
[email protected]
Weeks 3-4
R
O
S
T
R
A
L
Eye fields
Anterior neural plate
C
A
U
D
A
L
Prosencephalon
(forebrain)
► Optic
sulcus
► Optic groove
► Optic vesicles.
► Neuroectoderm.
- Retina , Iris ,
Optic nerve.
► Surface ectoderm.
- Lens.
► Mesoderm.
- vascular and fibrous
coats of the eye.
Optic groove
Ectoderm
Lens placode
Optic vesicle
Lens vesicle
Optic stalk
Surface ectoderm
Optic cup
Choroidal fissure normally closes by the 6th week.
Optic vesicle
Hyaloid artery .
Iris colobomas
Retinal coloboma
Persistent hyaloid artery
Mittendorf dot
Bergmeister papilla
PHPV
► Persistent
hyperplastic primary vitreous .
Leukocorea
Cornea
► Surface
► Inner
epithelium- etoderm.
layers – Neural crest cells.
Optic nerve myelination
Incomplete @ birth.
► Complete by 10 weeks of life.
► Stops off the optic never head.
►
Eyelids
► Fuse
by the beginnig of second trimester (
13-14weeks of embryogenesis).
► Remain adherent until about the 26 week of
embryogenesis.
Microphthalmia
► Microphthalmia.?
► Nanophthalmia.?
► Anophthalmia.?
► Cryptophthalmia.‫؟‬
► Cyclopia.?