1 From Pole des Neurosciences (D.B.), B4 Neurology Unit, Hôpital Pierre-Paul-Riquet, CHU Purpan, Toulouse; and Neuro-ophthalmology Unit (C.T.), Hôpital Neurologique, Hospices Civils de Lyon, Bron, France. [email protected].
2 From Pole des Neurosciences (D.B.), B4 Neurology Unit, Hôpital Pierre-Paul-Riquet, CHU Purpan, Toulouse; and Neuro-ophthalmology Unit (C.T.), Hôpital Neurologique, Hospices Civils de Lyon, Bron, France.