Dear Friends and Colleagues,   We are pleased to announce the 3rd World Congress on Controversies in Ophthalmology (COPHy), which will take place in Istanbul, Turkey, March 22-25, 2012.   The highly successful 1st and 2nd COPHy Congresses, which took place in Prague and Barcelona respectively, attracted over 1,300 participants from 58 countries.   Based on the success of the COPHY congresses, and on the feedback from COPHy participants, COPHy Istanbul will be devoted to evidence-based debates and discussions amongst chairpersons, speakers and the audience, all of whom will examine and analyze the most relevant issues raised during the course of 2011 within the field of Ophthalmology.     This time, simultaneous sessions will emphasize controversies within anterior segment, retina, and glaucoma.   We invite you to participate in the 3rd World Congress of Controversies in Ophthalmology (COPHy), the next edition of many future congresses to come.   We look forward to an exciting scientific event in the beautiful city of Istanbul, Turkey and to your active participation in this Congress!   Prof. Neil Bressler; Prof. Anat Loewenstein Co-Chairpersons