1. Department of Computer Science and Information Engineering, National Chung Cheng University, Chiayi Taiwan
2. Department of Ophthalmology, Taipei Veterans General Hospital, Taipei, Taiwan
3. School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
4. Department of Ophthalmology, Rajavithi Hospital, Bangkok, Thailand
5. Computer Science Department, Queens College, CUNY, Queens, New York, USA