Keirl, Andrew Clinical Optics and Refraction : A Guide for Optometrists, Contact Lens Opticians and Dispensing Opticians - Philadelphia Elsevier 2007 - various pages Illustrated ISBN: 9780750688895 Subjects--Topical Terms: Eye- Accomodation and refractionPhysiological opticsRefractive errorsContact lensesOptics Refraction, ocular LC Class. No.: RE 925 / .K45 2007