1Department of Ophthalmology, Changhua Christian Hospital, No. 135, Nanxiao Street, Changhua City, Taiwan
2Department of Ophthalmology, Yunlin Christian Hospital, Xiluo, Taiwan
3Department of Optometry, Central Taiwan University of Science and Technology, Taichung City, Taiwan
4School of Medicine, Chung-Shan Medical University, Taichung, Taiwan
5School of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
6Department of Optometry, Da-Yeh University, Changhua, Taiwan
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