J Neuroophthalmol 2021 Aug 17. Epub 2021 Aug 17.
Department of Radiology (KB), Massachusetts General Hospital, Boston, Massachusetts; Department of Neuro-Ophthalmology (MB), Beth Israel Deaconess Medical Center, Boston, Massachusetts; Department of Ophthalmology and Visual Sciences (RHK), University of Iowa Hospital and Clinics, Iowa City, Iowa; Iowa City VA Center for the Prevention and Treatment of Visual Loss (RHK), Iowa City VA Health Care System, Iowa City, Iowa; Department of Neurology (A-MW, MS, SHW), Massachusetts General Hospital, Boston, Massachusetts; and School of Optometry (CP), University of California, Berkeley, California.
Background: Supranuclear vertical gaze palsies and slowed vertical saccades are characteristic clinic features of progressive supranuclear palsy (PSP). The "hummingbird sign," reflective of midbrain atrophy, is a classic radiographic sign of PSP. Correlation between eye movement abnormalities and radiographic findings in PSP has been reported previously. Read More