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Related to CN III: CN IV, CN VI
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In summary, we strongly recommend orbital imaging in any child with progressive proptosis, strabismus, or apparent CN III palsy.
2) causes a tentorial pressure cone with downward herniation of the temporal lobe and compresses the CN III as it passes over the tentorial edge, initially causing irritative miosis followed by mydriasis and total CN III palsy.
The intracavernous part of CN III enters the cavernous sinus by piercing the dura lateral to the posterior clinoid process (Fig.