1. From the Cornea Center and the2Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan.
2. Department of Ophthalmology, Tokyo Dental College, Chiba, Japan; and the
3. Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan.
4. Department of Ophthalmology, Tokyo Dental College, Chiba, Japan; and the2Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan.