Karen Allison, MD

Ives "Tony" Valenzuela, MD, is a board-certified ophthalmologist and is the Helen and Martin Kimmel Assistant Professor of Ophthalmology at CUIMC. He is also an Attending Ophthalmologist at the New York Presbyterian Hospital where he serves as the Associate Director of the Ambulatory Care Network Eye Clinic. His surgical expertise includes traditional glaucoma surgery, minimally invasive glaucoma surgery, glaucoma laser surgery, and cataract surgery. Originally from Bethesda, Md., Dr. Valenzuela received his Bachelor of Science in Biology from Yale University. He received his medical degree from Columbia University Vagelos College of Physicians & Surgeons, where he was elected to the Alpha Omega Alpha Medical Honor Society. After an internship at Memorial Sloan Kettering Cancer Center, he completed his ophthalmology residency at New York Presbyterian/Columbia University Irving Medical Center where he served as Chief Resident in his final year. He subsequently completed the Advanced Specialty Glaucoma Fellowship Training Program at the Johns Hopkins Wilmer Eye Institute in Baltimore, Maryland where he also served as one of the Heed Ophthalmic Foundation Fellows for the 2022-2023 academic year. Upon completion of his fellowship, Dr. Valenzuela returned to Columbia as a full-time faculty member. Dr. Valenzuela's areas of research primarily focus on understanding glaucoma and glaucoma care in vulnerable populations, surgical and device innovation, and surgical instruction and ophthalmic education for resident and fellow trainees. Clinically, Dr. Valenzuela aims to form partnerships with each of his patients to best manage their glaucoma and maximize their quality of life.

Dr. Noga Harizman, MD is a Professor of Ophthalmology at Columbia University Irving Medical Center specializing in glaucoma and cornea. Dr. Harizman is a leader in minimally invasive glaucoma surgery techniques, both as a teacher and practitioner. Prior to joining Columbia, Dr. Harizman was the Director of Glaucoma services at the New York Eye and Ear Infirmary of Mount Sinai, and served as an attending physician and preceptor for resident glaucoma clinics. She is deeply involved in creating the glaucoma surgical curriculum and supervising resident and laser surgical cases. In Columbia University Irving Medical Center, she is the Glaucoma Fellowship program director since 2021. She is also Chief of the Department of Ophthalmology at Harlem Hospital-NYC HHC, where the Columbia Ophthalmology residents rotate twice a year throughout their training. For her outstanding educational leadership, she received the New York Eye and Ear Infirmary Teaching Award in 2011, and he Philip Knapp Memorial Residents Teaching Award at Columbia University Irving Medical Center in 2021. A native New Yorker born to Israeli parents, Dr. Harizman grew up in and was schooled and medically trained in Israel. She is a graduate of Tel Aviv University Medical School. Immediately upon graduating from ophthalmology residency, she began teaching and tutoring medical students on ocular anatomy and disease as a Clinical Instructor in Ophthalmology, at the Sackler Faculty of Medicine at Tel Aviv University. She then completed sequential fellowships in glaucoma and cornea at The New York Eye and Ear Infirmary, where she joined the full-time faculty in 2008. In addition to her accolades as a distinguished physician-educator with international experience and expertise, Dr. Harizman is known for being an effective and caring mentor for medical students, residents and fellows. She has maintained the highest professional and ethical standards and, enjoys providing care for her new and long-term patients, all while managing a full family life.