00641nam a22001697a 4500 0 0 0 0 GGL GGL 2020-10-27 Purchased: Allied Book Company 2502.40 14 1 617.7 KHU 57949 2025-07-04 00:00:00 2025-07-04 1 9145-INS BK Manually issued to 58573 31595 31595 9788131249154 (pbk) 617.7 KHU Khurana, A K Theory and practice of optics and refraction New Delhi Elsevier 2018 viii, 526 p. : ill. (col.) ; 23 cm. MSO Series Includes index. Optics-Refraction Rehabilitation sciences Optonutry-Orthoptics Corneal topography Physiological optics Optical instruments Contrast sensitivity Refractive surgery Visual acuity Spectacles Optometry RCR&AHS BK