1 Department of Neurology (BP-S), Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan; Departments of Ophthalmology (Y-HL) and Neurology (A-CC), Kaohsiung Medical University Hospital, Kaohsiung, Taiwan; and Departments of Ophthalmology (Y-HL) and Neurology (A-CC), School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.