Dr. Sandeep Saxena is a Professor of Ophthalmology in King George's Medical University at Lucknow, India. He has over 65 publications in indexed International and national peer reviewed journals. He has published 13 textbooks by Jaypee-Highlights Medical Publishers, Lippincott (USA), McGraw-Hill (USA) and Aanshan (UK). Books are in circulation worldwide. Dr. Saxena has written 31 book chapters in Indian, American and European textbooks. He has designed an instrument called ‘Saxena Retinal Grid-520 and 428’ (two models), Ocular Instruments, U.S.A. for adult and pediatric use.SriniVas R. Sadda, MD, is the President and Chief Scientific Officer of the Doheny Eye Institute, the Stephen J. Ryan – Arnold and Mabel Beckman Endowed Chair, and Professor of Ophthalmology at the University of California – Los Angeles (UCLA) Geffen School of Medicine. He has more than 280 peer-reviewed publications and 13 book chapters. Dr. Sadda also serves as an editorial board member of Ophthalmic Surgery, Lasers & Imaging, Retina, and Ophthalmology. He is also an editor of the 5th edition of the Ryan’s Retina textbook.