[1] Stanford Univ, Dept Ophthalmol, Palo Alto, CA USA
[2] Stanford Univ, Dept Neurol & Neurol Sci, Palo Alto, CA USA
[3] Indiana Univ Sch Med, Dept Ophthalmol, Indianapolis, IN USA
[4] Richard L Roudebush Vet Adm Med Ctr, Ophthalmol Serv, Indianapolis, IN USA
[5] Midwest Eye Inst, Neuroophthalmol Serv, Carmel, IN USA
[6] Indiana Univ Sch Med, Dept Neurol, Indianapolis, IN USA
[7] Indiana Univ Sch Med, Dept Neurosurg, Indianapolis, IN USA
[8] IU Hlth Neurosci Ctr, 355 W 16th St, Indianapolis, IN 46202 USA