Optic nerve sheath fenestration (ONSF), also known as optic nerve sheath decompression (ONSD), is a surgical procedure that relieves pressure from the optic nerve. This is achieved by creating a small incision in a layer of the optic nerve known as the optic nerve sheath. This allows excess cerebrospinal fluid (CSF) to escape from the space surrounding the optic nerve, known as the subarachnoid space.
WHAT IS AN Optic Nerve Sheath Fenestration?
Optic nerve sheath fenestration (ONSF), also known as optic nerve sheath decompression (ONSD), is a surgical procedure that relieves pressure from the optic nerve. This is achieved by creating a small incision in a layer of the optic nerve known as the optic nerve sheath. This allows excess cerebrospinal fluid (CSF) to escape from the space surrounding the optic nerve, known as the subarachnoid space.
WHO IS A GOOD CANDIDATE FOR ONSF?
Good candidates for this procedure are typically individuals experiencing elevated pressure on the optic nerve that leads to vision problems. This procedure is commonly recommended for patients with conditions such as:
- Idiopathic intracranial hypertension (IIH)
- Cerebral venous thrombosis
- Cryptococcal meningitis
- Other causes of secondary intracranial hypertension
WHAT TO EXPECT AFTER SURGERY?
- Avoid Anticoagulants: Patients should avoid anticoagulant medications.
- Recovery is usually relatively pain-free.
- Possible Complications: As with any eye surgery, possible complications include bleeding, infection, and blindness.
