1 Department of Ophthalmology, China Medical University Hospital, Taichung 406040, Taiwan.
2 Department of Ophthalmology, China Medical University Hospital, Taichung 406040, Taiwan; School of Medicine, College of Medicine, China Medical University, Taichung 406040, Taiwan; Department of Optometry, Asia University, Taichung, Taiwan. Electronic address: doctoraga@gmail.com.