Keratoconus Doctors Worldwide

Dr. Arsim Hajdari has performed over 4,000 TransPRK procedures and is a pioneer in Laser-Guided Cross-Linking for keratoconus at Italian Eye Hospital.

• Specializes in refractive surgery and keratoconus management
• Chief Clinical Officer with extensive academic and clinical roles
• Member of prestigious societies including AAO and EuRetina
• Lecturer and researcher focused on cutting-edge treatments

Over 37 years of surgical experience – Dr. Vivat is a leading expert in refractive error correction surgery in Thailand.

• Specializes in cornea and refractive surgery
• Former head of the Cornea and Refractive Surgery Unit
• Medical Director of the Ophthalmology Center at Rangsit University
• Trained at top institutions including Mahidol University and Khon Kaen University

Dr. Chutichate Pawaropart is a neuro-ophthalmology subspecialist at Navamin 9 Hospital in Bangkok. He completed his medical degree and ophthalmology certification at Chulalongkorn University. Dr. Pawaropart received specialized neuro-ophthalmology training at Sorbonne University in Paris. He effectively treats patients in English, Thai, and French.

• Specializes in cataract surgery including phacoemulsification and IOL replacement.
• Performs neuro-ophthalmic exams to diagnose complex vision and nerve conditions.
• Treats corneal trauma, pterygium, and macular dystrophy.
• Practices at Navamin 9 Hospital, a JCI-accredited facility in Thailand.

Dr. Abdullah Ozkaya is an ophthalmologist at Memorial Şişli Hospital in Istanbul. He specializes in retinal detachment surgery, vitrectomy, and laser eye procedures. Dr. Ozkaya has published over 80 articles in international journals. His surgical research has earned more than 500 citations from other medical experts. He treats patients at a JCI-accredited facility recognized for high surgical success rates.

• Member of the European Vitreoretinal Society and Turkish Ophthalmology Society.
• Teaches as a faculty member at Aydin University in Istanbul.
• Performs LASIK and macular degeneration surgery alongside complex vitreoretinal repairs.
• Expert in diagnostic tests including slit lamp exams and vision field studies.

1,100+ eye treatments performed – Dr. Kocabiyik specializes in cornea and refractive surgery at Hisar Hospital Intercontinental.

• 10 years of experience in ophthalmology
• Performs excimer laser treatment for refractive errors
• Published papers at multiple Ophthalmology National Congresses
• Specializes in cornea, glaucoma, and cataract procedures

Over 10,000 Argon Laser procedures performed – Dr. Faruk Eroglu specializes in advanced eye treatments at Hisar Hospital Intercontinental.

• 33 years of experience in ophthalmology
• Performed over 5,000 Excimer Laser procedures
• Completed over 1,000 cataract surgeries
• Member of the American Academy of Ophthalmology
• Graduated from Istanbul University Faculty of Medicine

Place and Date of Birth 
Ankara, 1980 

Foreign Languages 
English 

Education and Experience 
1998 – 2004 Gülhane Military Medical Academy, Faculty of Medicine 
2005 – 2007 6th Motorized Infantry Brigade Infirmary, Şırnak (General Practitioner) 2007 – 2011 Gülhane Military Medical Academy, Department of Ophthalmology (Specialization) 
2011 – 2018 Isparta Military Hospital / Isparta Yunus Emre State Hospital (Specialist Physician) 
2018 – 2022 Süleyman Demirel University, Department of Ophthalmology (Assistant Professor) 
2019 – 2019 Gülhane Military Medical Academy, Department of Ophthalmology Vitreoretinal Surgery Course 
2022 – 2024 Lara Anatolia Hospital (Associate Professor) 

Number of Scientific Publications 
Over 50 scientific publications 
 

Clinical Experience 
13 years of active practice in ophthalmology; experience with over 10,000 cases 

Procedures Performed

• Cataract surgery with IOL replacement (Single and both eyes)
• LASIK and IntraLase laser eye surgery
• ReLEx SMILE and Photorefractive keratectomy (PRK)
• Corneal Cross Linking (CCL) for keratoconus
• Strabismus treatment and surgical correction
• Artisan Iris and Claw Lens applications
  Oculoplasty (eyelid surgery)
  
  Professional Memberships 
  Turkish Ophthalmological Association (TOD)
  American Academy of Ophthalmology (AAO) 
  
  Certifications 
  International Council of Ophthalmology (ICO) – Optics, Refraction & Instruments (2019)
   International Council of Ophthalmology (ICO) – Basic Sciences (2019) International Council of Ophthalmology (ICO) – Clinical Examination (2020) International Council of Ophthalmology (ICO) – Fellowship of the International Council of Ophthalmology (FICO) (2021) 
  European Board of Ophthalmology – Fellowship of the European Board of Ophthalmology (FEBO) (2021) 
  Awards 3rd Place for Best Research, 43rd National Congress of the Turkish Ophthalmological Association (TOD), 2009 
   

Books/Book Chapters 
Umut Karaca, *Healthy Generation, Secure Future: A Guide to Growth, Development, and Nutrition for School-Aged Children (for Families and Teachers)* – Chapter: "Vision Problems" (2021) 
Umut Karaca, *COVID-19 Pandemic: Current Approaches* – Chapter: "The Impact of the COVID-19 Pandemic on Clinical Ophthalmology Practice" (2021) 
Umut Karaca, *Physical Examination Handbook (Süleyman Demirel University Faculty of Medicine)* – Chapter: "Strabismus Examination" (2019)
Umut Karaca, Murat Küçükevcilioğlu, Ali Hakan Durukan – *Pediatric Vitreoretinal Surgery* – Chapter title:(Closed Globe Injuries) (2023)

900+ performed treatments – Dr. Yasar Dag specializes in corneal diseases and keratoplasty at Valued Med Hub Hospitals.

• 17 years of experience in ophthalmology
• Specialized in corneal diseases and keratoplasty
• Member of the Turkish Ophthalmology Association
• Trained at İstanbul Göztepe Training and Research Hospital
• Published multiple research papers on eye conditions

Dr. Mehmet Tahir Sam has performed over 27,000 surgical cases, specializing in complex eye surgeries at Dünyagöz Eye Hospital Antalya.

• 25 years of experience in ophthalmology
• Member of the Turkish Ophthalmology Association, serving on the Konya and Antalya branch boards
• Certified in Artisan Iris and EVRS Vitreoretinal Surgery applications
• International recognition with more than 10 scientific publications
• Instructor for live surgery demonstrations at major ophthalmology congresses

30 years of experience with 30,000+ eye surgeries – Dr. Baha Toygar specializes in advanced treatments for vision correction.

• International instructor for intra corneal rings and phakic IOLs
• Moderator at ESCRS 2019 symposium on precision IOLs
• Active member of multiple prestigious ophthalmology societies
• Co-founder of the Black Sea Ophthalmological Society

Dr. Vergés leads the Ophthalmology Service at Dexeus University Hospital, with a distinguished career in advanced eye care techniques.

• Harvard PhD in Biology, specializing in tear secretion mechanisms
• Over 76 years of leadership in ophthalmology departments
• Recipient of multiple international awards for surgical innovations
• Member of the International Society of Refractive Surgery executive board
• Develops techniques for cataract and neurophysiological vision treatments

The doctor is a specialist in Otorhinolaryngology practicing at Hospital Quirónsalud Torrevieja. With a medical degree and specialization obtained from the Universidad Católica de Louvain, the doctor focuses on the diagnosis and management of ear, nose, and throat conditions, including hearing, nasal, and laryngeal symptoms. The clinical practice encompasses adult ENT consultations, outpatient diagnostics, and multidisciplinary medical assessments within a private hospital setting.

The doctor maintains professional memberships with the Belgian Royal Society of ENT and the French Society of Otolaryngology, bringing international training and expertise to the treatment of patients in Alicante.

Pioneer in laser treatment for ophthalmic disorders – Dr. Molina was the first in Spain to correct myopia with an excimer laser.

• Director of the Eye Clinic at Centro Médico Teknon since 1999
• Specializes in glaucoma and cataracts treatment with surgical techniques
• Member of multiple prestigious ophthalmology societies
• Provided over 100 lectures on new surgical techniques

Over 20,000 surgical cases performed – Dr. Tanriverdi brings extensive expertise to keratoconus treatment at Dünyagöz Eye Hospital.

• 21 years of active practice in ophthalmology
• Associate Professor at Istanbul Medipol University
• Awarded for best oral presentation at ASCRS 2019
• Member of Turkish Ophthalmology Association

Dr. Birgi Sönmezer brings over 32 years of specialized experience in retina and vitreoretinal surgery at top eye hospitals.

• Completed post-specialization training in retina and vitreoretinal surgery
• Founding partner of Kayseri Maya Eye Hospital
• Worked at World Eye Hospital branches across Turkey
• Currently practices at Antalya Medical Park Hospital

Dr. Begendi specializes in advanced laser eye procedures, including intraLase and femtosecond laser techniques, at Istanbul Florence Nightingale Hospital.

• Expert in laser iridotomy and other precision eye surgeries
• Published researcher in peer-reviewed ophthalmology journals
• Member of the Turkish Ophthalmology Association
• Graduated from Istanbul Bilim University School of Medicine
• Completed specialization at Akdeniz University

Expert in corneal transplantation with extensive research in human vision – Dr. Levinger works at Sourasky Medical Center, one of Israel's leading hospitals.

• Post-Doctoral Fellowship at Toronto Western Hospital, renowned for corneal surgery
• Member of American Academy of Ophthalmology and American Society of Cataract and Refractive Surgery
• Medical director of the Cataract Surgery Clinic at Ichilov Hospital
• Performs numerous operations on cornea and lens transplants

Dr. Ahmad Abdullayev is an ophthalmologist. He provides medical and surgical care for a wide range of eye diseases.

He performs cataract surgery with monofocal, EDOF, and trifocal lenses. He also performs secondary lens placement. He offers excimer laser vision correction, including Femto-LASIK, PRK, and SMILE. He provides medical and surgical care for glaucoma. He treats retinal diseases with medical therapy. He performs strabismus surgery. He manages corneal diseases, including keratoplasty and keratoconus cross-linking. He treats uveitis. He performs lacrimal pathway procedures, including DSR operation and pediatric probing.

Education: Azerbaijan Medical University, General Medicine (2004–2010). Ankara University, Department of Eye Diseases, specialist training (2011–2015).

Specializes in corneal and refractive surgery – Dr. Thammikasakul brings advanced training to keratoconus treatment at Intrarat Hospital.

• Fellowship-trained in corneal and refractive surgery at Khonkaen University
• Board-certified ophthalmologist with expertise in complex corneal conditions
• Uses latest refractive surgery techniques for vision correction
• Member of Thailand's ophthalmology community with hospital privileges