NAION risk factors
Crowding of the OD HT DM HL Collagen vascular disease Antiphopholipid antibody syndrome Hyperhomocysteinaemia Sudden hypotensive events Cataract surgery OSAS Erectile dysfunction
Dyschromatopsia-visual impairment
Optik neuritis: not proportional
NAION: proportional
Pseudo Foster Kennedy syndrome
In NAION (bilateral eyes involved) Optic atrophy in one eye, disc oedeme in the other
CN4 palsy
WOOG:worst on opposite gaze
BOOT:better on opposite tilt=compensatory head posture
Bielschowsky➕