Samir Alkabie1, Alex Lange2, Praveena Manogaran3, A Jon Stoessl4, Fiona Costello5, Jason J S Barton6. 1. Division of Neurology, University of British Columbia, Vancouver, BC, Canada; Department of Neurology, State University of New York Downstate Medical Center, Brooklyn, NY, USA; Department of Neurology, Kings County Hospital, Brooklyn, NY, USA. Electronic address: samir.alkabie@downstate.edu. 2. Neuro-ophthalmology, Department of Ophthalmology, University of British Columbia, Vancouver, BC, Canada; Vista Klinik, Vista Diagnostics and Laser Vista, Binningen, Switzerland. 3. Department of Neurology, University Hospital Zurich and University of Zurich, Zurich, Switzerland; Department of Information Technology and Electrical Engineering, Swiss Federal Institute of Technology, Zurich, Switzerland. 4. Division of Neurology, University of British Columbia, Vancouver, BC, Canada. 5. Neuro-ophthalmology, Department of Clinical Neurosciences and Surgery, University of Calgary, Hotchkiss Brain Institute, Calgary, Alberta, Canada. 6. Neuro-ophthalmology, Department of Ophthalmology, University of British Columbia, Vancouver, BC, Canada.
Abstract
OBJECTIVES: To determine if Parkinson's disease (PD) and progressive supranuclear palsy (PSP) differed on retinal measurements using optical coherence tomography (OCT). PATIENTS AND METHODS: In a prospective, controlled, cross-sectional cohort study, we recruited patients with PD or PSP for more than three years, as well as control subjects. We measured peripapillary retinal nerve fiber layer (RNFL) thickness and macular volume using spectral-domain OCT. The association between these OCT measures and the disease characteristics of duration and disability were examined using a linear mixed effect model. RESULTS: We analyzed eyes from n = 12 PD patients, n = 11 PSP patients, and n = 12 control subjects. RNFL thickness was reduced in eyes from patients with PSP, but there were no differences in macular volume between groups. RNFL thickness and macular volume were not significantly different between eyes from patients with PD and controls. Worse disability was associated with reduced macular volumes. CONCLUSION: PSP but not PD is associated with thinning of the peripapillary RNFL when symptoms have been present for more than three years.
OBJECTIVES: To determine if Parkinson's disease (PD) and progressive supranuclear palsy (PSP) differed on retinal measurements using optical coherence tomography (OCT). PATIENTS AND METHODS: In a prospective, controlled, cross-sectional cohort study, we recruited patients with PD or PSP for more than three years, as well as control subjects. We measured peripapillary retinal nerve fiber layer (RNFL) thickness and macular volume using spectral-domain OCT. The association between these OCT measures and the disease characteristics of duration and disability were examined using a linear mixed effect model. RESULTS: We analyzed eyes from n = 12 PDpatients, n = 11 PSPpatients, and n = 12 control subjects. RNFL thickness was reduced in eyes from patients with PSP, but there were no differences in macular volume between groups. RNFL thickness and macular volume were not significantly different between eyes from patients with PD and controls. Worse disability was associated with reduced macular volumes. CONCLUSION:PSP but not PD is associated with thinning of the peripapillary RNFL when symptoms have been present for more than three years.