1. Department of Medical
Engineering, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
2. Department of Electronics and Radio Engineering, Kyung Hee University, Gyeonggi-do 17104, Republic of Korea
3. Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
4. Department of Ophthalmology, College of Medicine, Kyung Hee University, Seoul 05278, Republic of Korea