D Hoshina1, N Haga1, K Furuya1, M Sakai2. 1. Department of Dermatology, Hakodate Central General Hospital, Honcho 33-2, Hakodate, 040-8585, Japan. 2. Department of Ophthalmology, Hakodate Central General Hospital, Honcho 33-2, Hakodate, 040-8585, Japan.