TY - BOOK AU - Keirl,Andrew AU - Christie,Caroline TI - Clinical optics and refraction : : a guide for optometrists, contac t lens opticians, and dispensing opticians / SN - 9780750688895 (pbk.) U1 - 617.7/5 22 PY - 2007/// CY - Edinburgh ; , New York : PB - Bailliáere Tindall Elsevier/Butterworth -Heinemann, KW - Eye KW - Accommodation and refraction KW - Physiological optics KW - Refractive Errors KW - COntact lenses KW - Optics KW - Refraction, Ocular N1 - Includes bibliographical references and index ER -