Umut Guner
- 5 Excellent • 2 reviews
- 13 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.
Dr. Martin Zehetmayer is an experienced ophthalmic surgeon. He earned his doctorate from the University of Vienna and holds specialist accreditation in ophthalmology and optometry. Since 1999, he has served as Senior Physician and Head of the Eye Clinic. He has led progress in eye tumor treatment, especially using stereotactic radiation therapy for malignant choroid tumors.
Dr. Zehetmayer has published about 100 scientific papers. His research covers ophthalmic oncology, corneal collagen structures, new methods of cataract anesthesia, intraocular lenses, and pediatric strabismus. He is active in several national and international ophthalmological societies and has held leadership roles. His work has made a strong impact in the field.
Dr. Özer Kavalcıoğlu is an experienced ophthalmologist. He graduated from Hacettepe University Medical School. He is a member of several respected organizations, including the American Academy of Ophthalmology (AAO), American Society of Cataract and Refractive Surgery (ASCRS), and European Society of Cataract and Refractive Surgeons (ESCRS).
Dr. Kavalcıoğlu has attended many international conferences, such as the Congress of the European Society of Ophthalmology, World Glaucoma Congress, and Congress on Controversies in Ophthalmology. He is dedicated to ongoing professional development and high standards in patient care.
Dr. Akin Akyurt is an experienced ophthalmologist. He graduated from Istanbul University School of Medicine. He completed advanced fellowships at University Eye Clinics in Cologne and Tuebingen, Germany. He also holds a PhD focused on immunomodulatory therapy for uveitis.
Dr. Akyurt is certified in LASIK, presbyopia correction with multifocal intraocular lenses, scleral fixation, corneal collagen cross-linking, femtosecond anterior segment surgery, and corneal topography analysis. He is a member of the DOG, AAO, ASCRS, and ESCRS.
He has presented at major international congresses, such as the World Ophthalmology Congress and ESCRS meetings. He has contributed to advances in cataract and refractive surgery.
Dr. Sasi Yaisawang, M.D., is an ophthalmologist at Bangkok Eye Hospital. She specializes in cornea and refractive surgery.
She graduated in medicine with first-class honors from Chulalongkorn University. She completed her ophthalmology residency at Khon Kaen University. She is a Ph.D. candidate. She has presented her work at the American Academy of Ophthalmology (AAO). She has authored medical textbooks and research articles.
Chayanee Potivongsajarn, M.D., is an ophthalmologist. She has subspecialty training in cornea and refractive surgery and holds internationally recognized credentials.
She graduated with First Class Honors from the Faculty of Medicine, Siriraj Hospital. She completed an ophthalmology residency at Ramathibodi Hospital. She then pursued a fellowship in cornea and refractive surgery. Dr. Potivongsajarn is a Fellow of the International Council of Ophthalmology (FICO). This credential recognizes her clinical knowledge and expertise worldwide.
Dr. Afrim Vuçitërna is a specialist ophthalmologist with over 30 years of experience in Kosovo’s public healthcare system. He began his career in 1990. Dr. Vuçitërna has worked in both outpatient clinics and hospitals. He focuses on anterior segment diseases and general ophthalmology.
He completed his medical degree and specialization in ophthalmology in the former Yugoslavia. Dr. Vuçitërna is a member of the Kosovo Chamber of Doctors (Oda e Mjekëve të Kosovës). This membership shows his professional accreditation and dedication to high standards in clinical care.
Dr. Gokay Gunay is an ophthalmologist. He trained at Istanbul University Cerrahpaşa Faculty of Medicine (1991–1997) and at Istanbul University Çapa Faculty of Medicine, Department of Eye Diseases (1997–2001).
He has experience in over 20,000 surgical cases. He is a member of the Turkish Ophthalmology Association, the American Academy of Ophthalmology, the European Society of Cataract and Refractive Surgeons, and the American Society of Cataract and Refractive Surgery. He speaks English.
Areas of Interests
Education:
Experience:
Prof. Dr. Ihsan Yilmaz is a respected ophthalmologist with more than 20 years of experience. He specializes in retinal diseases, vision correction, and advanced eye surgery. He is skilled in retinal detachment surgery, cataract surgery, and LASIK. Dr. Yilmaz has performed thousands of successful procedures.
He has published over 100 articles, abstracts, and reports in top ophthalmology journals. He is accredited by the European Board of Ophthalmology. Dr. Yilmaz is also a member of the American Academy of Ophthalmology and ASCRS. His research on Phakic Intraocular Lenses has reached more than 300 ophthalmologists.
Medical Interests and Activities
Cornea
Anterior Segment Surgery
Retractive Surgery
Education and Experience
Private Practice
Beyoğlu Eye Hospital
Faculty of Medicine, Ankara University
Liv Hospital, Ulus, Department of Eye Diseases
Research and Publications
International papers: 30
National papers: 30+
Book in Turkish : 1 (Wavefront and topography based laser)
Book Chapters: numerous
Journal Editing, Membership for Publication and Scientific Advisory Boards
The Cornea (reviewer.)
Specialisation:Eye CARE
Years of Experience: 13
Education: Dicle University Faculty of Medicine (2009)
Languages:English, Turkish
Memberships & Awards:Over 100 medical articles
Education:
2006-2013 Bursa Uludag University Faculty of Medicine - Undergraduate - (1 year English preparatory education)
2015-2020 Istanbul University of Health Sciences Haydarpaşa Numune Education and Research
Hospital, Department of Ophthalmology - Specialization in Medicine
Work Experience:
2013 : Yozgat Sarıkaya Community Health Center (General Practitioner)
2014: Ankara University Department of Physical Therapy and Rehabilitation (Research Assistant)
2015-2020 : Istanbul University of Health Sciences Haydarpasa Numune Training and Research Hospital
Department of Ophthalmology (Research Assistant)
2020-2022 : Kırşehir Training and Research Hospital (Specialist Physician)
Medical Interests:
oculoplastic surgery
Blepharoplasty - Botox - Eye area aesthetics
Excimer laser- Refractive surgery
cataract surgery
general ophthalmology