Jonathan Dutton: Oculofacial Surgery
sov - superior ophthalmic v.
so - supraorbital v.
st - supratrochlear v.
spv - superior palpebral v.
a - angular v.
lv - lacrimal v.
mpv - medial palpebral v.
lpv - lateral palpebral v.
vv - vortex v.
iov - inferior ophthalmic v.