Dr. Quaranta-Leoni is the Director of the Adnexal and Orbital Service in the Dept. of Ophthalmology of Tiberia Hospital - GVM Care & Research in Rome, the Medical Director at Oftalmoplastica Roma, Adjunct Professor at the Faculty of Medicine and Surgery – University of Pavia and has a commitment to teaching, actively participating in post-residency training in adnexal disease.
He is Immediate Past President of ESOPRS, and Past President and Past Secretary of SICOP (Italian Oculoplastic Surgery Society). He is International Associate Member of ASOPRS, Member of ITEDS, and has been Italian Committee Member of ESOPRS in 2005-2009.
He is in the Editorial Board of Orbit, the International Journal on Orbital Disorders, Oculoplastic and Lacrimal Surgery.