3. The patient has failed at least 3 months of corticosteroids (prednisone 0.5mg/kg to start), IVIG and at least one other immunosuppressive drug such as methotrexate, Imuran, cyclosporine, etc. Failure is defined by decline of visual acuity (by standard Snellen acuity clinical testing) or visual field (by Humphrey Automated Machine with the 30-2 program or using Kinetic Visual Fields on the Goldman Perimeter)