[1
]Department of Ophthalmology, Institute of Clinical Medicine, University of Eastern
Finland, Kuopio, Finland
[2
]Department of Ophthalmology, Kuopio University Hospital, Kuopio, Finland
[3
]Department of Neurology, Institute of Clinical Medicine, University of Eastern Finland,
Kuopio, Finland
[4
]Department of Neurology, Kuopio University Hospital, Kuopio, Finland