1. Department of Ophthalmology, Show Chwan Memorial Hospital, No. 526, Sec. 1, Zhongshan Road, Changhua 500, Taiwan
2. Institute of Electrical and Computer Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan
3. Central Taiwan University of Science and Technology, No. 666, Buzih Road, Beitun District, Taichung 40601, Taiwan
4. Albert Einstein College of Medicine, Yeshiva University, 1300 Morris Park Avenue, Bronx, NY 10461, USA
5. Department of Optometry, Yuan Pei University, Hsinchu 30015, Taiwan