This data is the ocular refraction and pupil diameter data accumulated in the "Ocular accommodation does take place under the Maxwellian view observation method.” We hope that this will help researchers study the response of the pupil to ocular refraction. Sincerely, Masakazu Hirota ***************************************** Masakazu Hirota Senior Assistant Professor Dept. of Orthoptics, Teikyo Univ. 2-11-1 Kaga, Itabashi-ku, Tokyo 173-8605 E-mail: hirota.ortho@med.teikyo-u.ac.jp Tel: +81-03-3964-1328 Fax: +81-03-3963-0303 *****************************************