1. From the Johnson & Johnson Ocular Surface and Visual Optics Department and the 2Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan;
2. From the Johnson & Johnson Ocular Surface and Visual Optics Department and the 4Department of Ophthalmology, Tokyo Dental College, Chiba, Japan;
3. From the Johnson & Johnson Ocular Surface and Visual Optics Department and
4. Maruishi Kasei Research, Tokyo, Japan; and
5. the Japanese Preventive Medicine Society, Tokyo, Japan.
6. the Department of Ophthalmology, Tokyo Dental College, Chiba, Japan;
7. the Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan;