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Modified optic nerve sheath decompression provides long-term visual improvement for pseudotumor cerebri.
R C Sergott1, P J Savino, T M Bosley
1Neuro-Ophthalmology Service, Wills Eye Hospital, Philadelphia, PA 19107.
Archives of Ophthalmology (Chicago, Ill. : 1960)
|October 1, 1988
Summary
A modified optic nerve sheath decompression effectively restored vision in most patients with chronic papilledema due to pseudotumor cerebri. This surgical technique improved visual acuity and fields, even in patients who previously failed other treatments.
Area of Science:
- Ophthalmology
- Neurosurgery
Background:
- Chronic papilledema associated with pseudotumor cerebri can lead to significant visual impairment.
- Optic nerve sheath decompression is a surgical option for managing visual loss in these patients.
Purpose of the Study:
- To evaluate the efficacy of a modified optic nerve sheath decompression technique in patients with chronic papilledema and visual dysfunction.
- To assess the long-term visual outcomes and compare the modified procedure with standard techniques.
Main Methods:
- Twenty-three patients with chronic papilledema underwent a modified optic nerve sheath decompression involving longitudinal incisions and arachnoid adhesion lysis.
- Surgical outcomes were assessed by visual acuity and visual field testing during a mean follow-up of 21.5 months.
Main Results:
- Twenty-one of 23 patients (91%) showed improved visual function after the initial modified surgery.
- Unilateral surgery improved vision bilaterally in 12 of 21 patients with bilateral visual loss.
- The modified procedure was effective in patients who failed prior treatments, including lumbar-peritoneal shunts.
Conclusions:
- The modified optic nerve sheath decompression is a safe and effective treatment for visual loss in chronic papilledema associated with pseudotumor cerebri.
- This technique offers significant visual recovery and may be superior to standard decompression or shunting procedures in select cases.