They are describing cavernous sinus syndrome (FA 2018 page 526) CN VI is the most susceptible to injury! CN VI is needed to abduct the eye. these patients have cavernous sinus thrombosis related to the infection, carotid cavernous fistulas, occasinally decreased maxillary sensation. decreased corneal sensation, horner syndrome.

cavernous sinus = CN 3,4, V1, V2, 6 CN 3,4, V1, V2 - go from top to bottom then CN 6 is in the middle of the diagram we are usually shown

The cavernous sinus contains CN 3,4,V1,V2, and 6 (right next to the ICA).

A: MCA defect (face and upper limb)

B: olfactory (recall that this is the only sense spared in thalamic strokes)

C: damage to macula, could be an MCA defect?

D: MCA; supplies parental and temporal(total HH, macula NOT spared), PCA; supplies occipital and some of temporal (total HH, macula spared) - mentioned pareital and temporal because of the quadrantonopis; 2 quads = 1 hemianopsia

E: LR (recall LR6, SO4)