Umut Guner
- 5 Excellent • 2 reviews
- 12 years of experience
- Turkey, Istanbul, Dunyagoz Eye Hospital Istanbul Altunizade
Dr. Martin Zehetmayer is an experienced ophthalmologist who specializes in eye surgery. He earned his doctorate from the University of Vienna and holds a Ius Practicandi license. Since 1999, he has served as Senior Physician and Head of the Eye Clinic at the University Hospital of Ophthalmology in Vienna.
Dr. Zehetmayer has published about 100 scientific papers. His main research areas include ophthalmic oncology, corneal collagen structures, cataract surgery, and intraocular lenses. He was one of the first to use stereotactic radiosurgery (Gamma Knife, LINAC) for choroidal melanoma. He also leads the outpatient clinic for eye tumors.
He is a certified specialist in ophthalmology and optometry. Dr. Zehetmayer serves as Secretary of the Austrian Ophthalmological Society and has been President of the Vienna Ophthalmological Society. He is a university professor and an active member of several national and international professional societies.
Prof. Dr. Michael Georgopoulos is a Senior Consultant in Vitreoretinal Surgery at the Medical University of Vienna. He specializes in diseases of the macula, retina, and vitreous body. He is known for his skill in macular surgery, treating retinal detachment, and managing complex vitreous disorders such as vitreous hemorrhage and opacification.
Dr. Georgopoulos has led important clinical studies on 23-gauge transconjunctival vitrectomy and high-resolution OCT. He has also worked on new treatments, including VEGF inhibitors and cortisone. His research covers surgical techniques, drug therapy for vitreous diseases, and cytokine profiling in retinal conditions. His work has helped improve vitreoretinal surgery and patient care.
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Dr. Stefan Sacu is an experienced ophthalmologist. He specializes in cataract and retinal surgery, as well as diseases of the macula and retina. Since 1999, he has worked at the Department of Ophthalmology at the Medical University of Vienna. He is known for his research on new treatments for exudative macular diseases and genetic therapies for retinal disorders.
Dr. Sacu received the Theodor-Koerner Science Prize in 2003. He is an active member of the DGII and ESCRS. He has played a key role in clinical teaching. His published research on anti-VEGF therapies and retinal vein occlusions has established him as a leading expert in ophthalmology.