Results of optic nerve sheath fenestration for XXXX cerebri. The lateral orbitotomy approach.

@entity1 @entity1018 @entity227 @entity6437 @entity1829
Twenty-eight @entity1 with @entity6437 cerebri underwent 40 optic nerve sheath fenestrations for relief of @entity227 . Twenty @entity1 and eight @entity1 underwent 16 unilateral fenestrations and 12 bilateral operations. @entity1829 disappeared or was strikingly reduced in 24 of 28 @entity1 . The other four @entity1 had gliotic discs (two @entity1 ) or were followed up for only a short time. Visual acuity improved in 12 of 40 eyes and remained the same in 22 of 40 eyes. Seventeen eyes had preoperative visual acuity of 20/30 or better. In six eyes visual acuity decreased. Of eight eyes operated on that had visual acuity of 20/200 or worse, only three showed improvement. Visual fields improved in 21 of 40 eyes and remained the same in ten eyes. Five of the ten eyes that did not change had poor vision before surgery. Eight eyes in five @entity1 continued to lose acuity postoperatively. Each of these eight eyes had a concomitant loss of visual field. An additional two eyes developed @entity227 with preserved visual acuity. The indications for surgery are early evidence of progressive @entity227 in a @entity1 with @entity6437 cerebri. Severe @entity1018 presents little opportunity for improvement but fenestration may be used in a last effort to preserve or restore vision.
