| Major Criteria (all required for qualification) |
| Failed maximal medical therapy or Fulminant course refractory to medical treatment with rapidly worsening vision. |
| Presence of pressure gradient across the stenosis ≥ 8 mmHg. |
| Pressure ≥ 22 mmHg. (30 cm H2O) |
| Visual changes, papilledema, or other focal objective neurological symptoms. Headaches only if severely disabling. |
| No contraindications to dual antiplatelet therapy. |
| Minor Criteria (one required for qualification) |
| Intolerance to repeated lumbar puncture or lumbar drain. |
| Diagnosis of dural sinus stenosis ≥ 50% on CT or MR venography. |
| Failed surgical shunting procedure or Failed optic nerve fenestration. |
| Pulsatility seen on manometry that is attenuated post stenosis. |
| Patient preference. |
