Associate Professor of Ophthalmology, University of Health Sciences Kanuni Sultan Süleyman Training and Research Hospital, Clinic of Ophthalmology, İstanbul, Turkey   Research Interests: Clinical ophthalmology, Statistical analysis, Ophthalmology, Phacoemulsification, Medical Retina, Prematurite of Retinopathy   Biography: Dr. Sayin finished high school education in Karabuk Mustafa Yazici High School with honored as the best top three students in 2000. He attended medical shool in University of Ondokuz Mayis and graduated in 2006. He completed residency of ophthalmology in Beyoglu Eye Education and Research Hospital between 20056 and 2011. In 2015, he passed the European Bord of Ophthalmology exam and received the FEBO title. In 2017, he received the title of Associate Professor Doctor in University of Health Sciences Kanuni Sultan Süleyman Training and Research Hospital. He has been working at University of Health Sciences Kanuni Sultan Süleyman Training and Research Hospital since 2012. He has co-authored several original Research Articles and he is Reviewer in a number of International Peer-Reviewed Journals as well as Member of the Editorial Board of several Scientific Journals.