1. Department of Ophthalmology, Ilsan Paik Hospital, Inje University College of Medicine, Ilsan, Korea.
2. The Korean Contact Lens Study Society, Seoul, Korea.
3. Department of Ophthalmology, Guro Hospital, Korea University College of Medicine, Seoul, Korea.
4. Department of Ophthalmology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Bundang, Korea.
5. Department of Ophthalmology and Visual Science, Yeouido St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, Korea.
6. Department of Ophthalmology, Seoul Paik Hospital, Inje University College of Medicine, Seoul, Korea.