1 Department of Ophthalmology, Taipei Veterans General Hospital, Taipei, Taiwan; School of Medicine, National Yang-Ming Chiao Tung University, Taipei, Taiwan.
2 School of Medicine, National Yang-Ming Chiao Tung University, Taipei, Taiwan; Department of Ophthalmology, Cheng Hsin General Hospital, Taipei, Taiwan.
3 Department of Ophthalmology, Taipei Veterans General Hospital, Taipei, Taiwan; School of Medicine, National Yang-Ming Chiao Tung University, Taipei, Taiwan. Electronic address: m95gbk@gmail.com.