Chaeyeon Lee1, Ja-Hyun Jang2, Kyung-Ah Park3, Ga-In Lee1, Sei Yeul Oh1. 1. Department of Ophthalmology, Samsung Medical Centre, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Korea. 2. Department of Laboratory Medicine and Genetics, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Korea. 3. Department of Ophthalmology, Samsung Medical Centre, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Korea. kparkoph@skku.edu.