1. Department of Optometry Chung Shan Medical University Taichung Taiwan
2. Department of Ophthalmology Chung Shan Medical University Hospital Taichung Taiwan
3. School of Medicine Chung Shan Medical University Taichung Taiwan
4. Department of Pediatrics Chung Shan Medical University Hospital Taichung Taiwan
5. Department of Optometry Central Taiwan University of Science and Technology Taichung Taiwan