All of the following statements are true regarding cavernous sinus thrombosis EXCEPT
Cavernous sinus thrombosis caused by sepsis in the dangerous area of face, in nasal cavities & in paranasal sinuses. Septic emboli carried by superior (more common) or inferior ophthalmic veins into the cavernous sinus. Nervous symptoms - Loss of sensation around the eye due to involvement of V1 and V2 division of Vth nerve. - Involvement of CN III, IV, VI Venous symptoms Edema of eyelids, cornea, root of nose d/o congestion of the orbital veins.