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Table 2: Comparison of typical clinical features in IIH and VIIP
IIH VIIP
Finding 
    Increased intracranial pressure ✓ Mildly elevated postflight; in-flight ICP unknown
    Papilledema ✓ ✓
    Globe flattening ✓ ✓
    Choroidal folds ✓ ✓
    Hyperopic shifts ✓ ✓
    Chronic headaches ✓ 
    Diplopia ✓ 
    Transient visual obscurations ✓ 
    Pulse-synchronous tinnitus ✓ 
    Sixth cranial nerve palsy ✓ 
Patient characteristics 
    Obesity ✓ 
    Sex predominance Female Male
Imaging findings 
    Optic nerve head protrusion ✓ ✓
    Flattened posterior globe ✓ ✓
    Enlarged optic nerve sheath ✓ ✓
    Optic nerve tortuosity ✓ ✓
    Empty sella ✓ ✓
Note:—✓ indicates clinical feature present.

	IIH	VIIP
Finding
Increased intracranial pressure	✓	Mildly elevated postflight; in-flight ICP unknown
Papilledema	✓	✓
Globe flattening	✓	✓
Choroidal folds	✓	✓
Hyperopic shifts	✓	✓
Chronic headaches	✓
Diplopia	✓
Transient visual obscurations	✓
Pulse-synchronous tinnitus	✓
Sixth cranial nerve palsy	✓
Patient characteristics
Obesity	✓
Sex predominance	Female	Male
Imaging findings
Optic nerve head protrusion	✓	✓
Flattened posterior globe	✓	✓
Enlarged optic nerve sheath	✓	✓
Optic nerve tortuosity	✓	✓
Empty sella	✓	✓