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What is the eye derived from?
Ectoderm(neural + surface)
Mesoderm
The eye started as …
Optic vesicle connected to the midbrain by Optic stalk
What causes the enlargement of the eyes during development?
Raised Intraocular pressure → stretch the cornea & sclera
What is the weakest part of the orbit?
The floor + medial wall
How many bones make up the orbit?
7 bones
What are the important openings in the orbit?
Optic foramen
Superior orbital fissure
Inferior orbital fissure
What are the extraoccular muscles:
4 recti
2 oblique
What is the n.s extraocular muscles?
Oculomoter n. except
superior oblique → trochlear n.
lateral rectus → abducent n