Controlled studies and retrospective case series of five or more decompressed orbits were eligible for inclusion. Eligible studies were classified by intervention: endoscopic endonasal, transantral, external, minimal access and combined techniques.
The most common outcome measures were reduction in proptosis and improvement in visual acuity. Adverse effects and postoperative diplopia were catalogued. Patient age ranged from 14 to 83 years old. Follow-up ranged from one week to 160 months.
Two reviewers performed the study selection.