Best Refractometry Doctors Worldwide — TOP 128

30,000+ eye surgeries performed – Dr. Kubaloglu is a master surgeon at Dunyagoz Eye Hospital Istanbul Etiler.

• Specializes in refractometry – testing how the eye focuses light to detect vision errors
• Uses ReLEx SMILE – a minimally invasive laser method to reshape the cornea
• Authored 100+ scientific publications on cataract and corneal surgery outcomes
• Member of the American Academy of Ophthalmology
• Member of the European Society of Cataract and Refractive Surgeons

Dr. Muhammet Derda Ozer is an associate professor and ophthalmologist at his JCI-accredited clinic in Istanbul. He completed a fellowship in vitreo-retina at the University of Kansas Medical School. Dr. Ozer has performed over 25,000 surgical procedures during his clinical practice. He holds the Advanced Examination certificate from the International Council of Ophthalmology.

• Specializes in cataract surgery, refractive laser vision correction, and retina care.
• Treats complex conditions including ocular oncology and pediatric retinoblastoma.
• Passed USMLE Step 1 and Step 2 CK for US medical licensure.
• Active member of the Young Ophthalmologist Council within the Turkish Ophthalmological Association.

Dr. Hakan Sivrikaya is an eye surgery specialist at Dunyagoz Eye Hospital Antalya. He treats conditions like cataracts and keratoconus. Dr. Sivrikaya trained at the Russian Medical Academy Eye Hospital in Moscow. He communicates with patients in English, German, and Russian.

• Performs LASIK, ReLEx SMILE, and cataract surgery with IOL replacement.
• Former member of the American Academy of Ophthalmology and International Society of Refractive Surgery.
• Served in the European Society of Cataract and Refractive Surgeons.
• Works at an ISO 9001-certified clinic treating 30,000 patients annually.

Professor Hamdi Er is an eye specialist with elite training from Moorfields Eye Hospital and the Doheny Eye Institute. He uses refractometry to pinpoint vision errors at Dunyagoz Eye Hospital.

• Completed postdoctoral fellowships at the University of California and Baylor College of Medicine
• Expert in ReLEx SMILE and LASIK laser vision correction procedures
• Treats complex corneal disorders and retinal detachment using microsurgery
• Member of the American Academy of Ophthalmology and the European VitreoRetinal Society

Dr. Akkan performed the first bionic eye surgery in Turkey. He leads vision correction and retinal treatments at Dunyagoz Eye Hospital Istanbul Etiler.

• Performs refractometry during general eye examinations to measure vision errors
• Recipient of the TOD Best Surgical Video Award for advanced clinical techniques
• Specializes in laser vision correction including LASIK, LASEK, and ReLEx SMILE
• Member of the American Academy of Ophthalmology and European Vitreoretinal Society
• Trained at the Istanbul School of Medicine and Istanbul Research Hospital

Dr. Derda Ozer is an ophthalmologist at Valued Med Hub Hospitals in Istanbul. He specializes in ocular oncology and surgical retina treatments. Dr. Ozer has published over 35 research papers in journals like Cornea and International Ophthalmology. He focus on imaging and new treatments for vascular eye diseases.

• Completed the ICO-STAAR surgical fellowship in vitreo-retina.
• Treats complex conditions like uveitis, macular degeneration, and retinal detachment.
• Performs vitrectomy, keratoplasty, and cataract surgery with IOL replacement.
• Practice is based at a government-authorized center for international health tourism.

Dr. Ferran Mascaró Zamora is the chief of ophthalmology at Centro Médico Teknon in Barcelona. He specializes in lens, refractive, and complex orbital surgery. Dr. Mascaró Zamora is a recognized expert in oculoplastics and lacrimal duct procedures. He earned his doctorate at the Autonomous University of Barcelona with honors.

• Directs the Orbital and Oculoplastics Department at Teknon.
• Accredited specialist in orbital tumors and decompression surgery for thyroid disease.
• Co-authored three books on ophthalmology and published original research in specialized journals.
• Fellow of the Spanish Society of Ocular and Orbital Plastic Surgery.

Dr. Nikolaos Dervenis is an ophthalmic surgeon who has performed over 4,000 cataract surgeries. He specializes in LASIK, premium IOL replacement, and vitrectomy at his clinic in Thessaloniki. Dr. Dervenis earned over 20,000 citations for his research in international peer-reviewed journals. This high citation count reflects his significant influence on modern eye surgery techniques.

• Completed a specialized cataract fellowship at Moorfields Eye Hospital in the UK.
• Served as a consultant ophthalmic surgeon in the UK’s National Health System.
• Accepts complex referrals for only-eye patients and brunescent cataracts.
• Member of the European Society of Retina Specialists and FEBO certified.

Dr. Nabil Ragaei Kamel is an ophthalmologist at Quirónsalud Marbella in Spain. He performs over 3,600 eye surgeries annually. Dr. Kamel received the Physician of the Year award in Ophthalmology. He specializes in laser-based vision correction and cataract surgery.

• Expert in LASIK, ReLEx SMILE, and LASEK eye procedures.
• Performs complex cataract surgery including multifocal IOL implantation.
• Treats specialized conditions such as strabismus, keratoconus, and vitreous destruction.
• Member of the European Society of Cataract and Refractive Surgery.

Dr. Ponpawee Jindarak is an ophthalmologist at Intrarat Hospital in Bangkok. She completed an international clinical fellowship in glaucoma in the United States. This training took place at the Illinois Eye and Ear Infirmary in Chicago. Dr. Jindarak specializes in diagnosing and treating complex vision conditions and eye diseases.

• Completed medical and specialty training at Chulalongkorn University.
• Treats conditions including glaucoma, cataracts, and retinopathy of prematurity.
• Performs surgical procedures such as trabeculotomy, pupilloplasty, and corneal transplants.
• Works at Intrarat Hospital, an ISO-certified facility treating 100,000 patients annually.

EDUCATION

Mersin University, Faculty of Medicine, 2009

Istanbul Göztepe Training and Research Hospital, Residency in Ophthalmology, 2009 to 2013

PROFESSIONAL EXPERIENCE

Mardin Midyat State Hospital – Specialist Ophthalmologist, 2014 to 2020

Mardin Training and Research Hospital – Specialist Ophthalmologist, 2020 to 2022

Başakşehir Çam and Sakura City Hospital – Specialist Ophthalmologist, 2022to 2024

Westeye Hospital, Erbil – Specialist Ophthalmologist, 2024 to 2025

Istanbul Tema Hospital – Specialist Ophthalmologist, 2024 to 2025

AREAS OF EXPERTISE

-Cataract and Refractive Surgery

-Corneal Diseases and Keratoplasty

-Strabismus and Strabismus Surgery

-Eyelid and Lacrimal System Surgery

-Ocular Trauma Surgery

TRAINING & CERTIFICATIONS

-Vitrectomy Training at Ulucanlar Eye Training and Research Hospital, 2020

MEMBERSHIPS

-Member of the Turkish Ophthalmological Association (TOD)

PUBLICATIONS

1)Changes caused by fluorescein in the tear film evaluated with hybrid break-up time test as a new method - Part Two: Its effect on breakup locations and other quantitative values, Photodiagnosis and Photodynamic Therapy, 2023

2)The profile of patients attending to the general emergency department with ocular complaints within the last year: is it a true ocular emergency?, BMC Ophthalmology, 2024

3)Medium-term outcomes of three horizontal muscle surgery in large-angle infantile esotropia, Journal of Pediatric Ophthalmology & Strabismus, 2014

4)Evaluation of Anterior Segment Parameters Using Scheimpflug Topography Device in Patients Undergoing Nd:YAG Laser Posterior Capsulotomy: Retrospective Study, Türkiye Klinikleri Journal of Ophthalmology, 2024

5)Publication patterns of ophthalmology residency dissertations in Turkey, European Journal of General Medicine, 2015

6)Evaluation of the Effect of Infection and Immunity on the Tear Film by Scheimpflug-Placido Disc Topography – A Case Control Study, Photodiagnosis and Photodynamic Therapy, 2023

7)Changes caused by fluorescein in tear film by hybrid break-up time test - Part One: On quantitative values, Photodiagnosis and Photodynamic Therapy, 2022

8)An easy and practical method for toric intraocular lens implantation: marking corneal astigmatic axis at slit-lamp, International Ophthalmology, 2017

9)Slanted medial rectus recession is effective in the treatment of convergence excess esotropia, Journal of Pediatric Ophthalmology & Strabismus, 2014

10)A reasonable option in vitrectomized eyes: manual small incision cataract surgery, International Journal of Ophthalmology, 2014

11)The Role of Systemic Inflammation in Acquired Nasolacrimal Duct Obstruction, Beyoglu Eye Journal, 2023

12)A New Approach: Determination of the Safe Surgical Margin in Pterygium Surgery, Klinische Monatsblätter für Augenheilkunde, 2023

Eductaion: 

2013

ISTANBUL PROF.DR.N. REŞAT BELGER BEYOĞLU EYE TRAINING AND RESEARCH HOSPITAL, EYE DISEASES

2008

ISTANBUL UNIVERSITY, FACULTY OF MEDICINE

Dr. Semih Urz is an ophthalmologist at Valued Med Hub Hospitals in Istanbul. He has performed over 35,000 surgical procedures throughout his career. Dr. Urz specializes in ReLEx SMILE, cataract surgery, and vitrectomy. He received the Best Doctor award from the Turkish Ministry of Health.

• Expertise includes multifocal lens implants and LASIK eye surgery.
• Treats complex eye conditions such as keratoconus and strabismus.
• Authored several books regarding eye health and diseases.
• Member of the Turkish Ophthalmology Association and the Turkish Medical Association.

Professor Ümit Aykan is a Fellow of the European Board of Ophthalmology. He uses refractometry at Dunyagoz Eye Hospital to ensure surgical precision.

• Member of the Turkish Society of Ophthalmology Cataract-Refractive Surgery Unit
• Uses refractometry to determine exact lens power for multifocal implants
• Fellow of the European Board of Ophthalmology – a prestigious certification of expertise
• Professor of Medicine at Near East University who trains future eye specialists
• Completed advanced glaucoma and eye research training in San Francisco, USA

Winner of the Troutman Award, Dr. Bardak specializes in vision restoration at Dunyagoz Eye Hospital. He uses refractometry to perform precise vision testing for surgical planning.

• Trained at University of Nijmegen during an ophthalmology fellowship in the Netherlands
• Received 1999 Troutman Award for laser thermal keratoplasty research – reshaping the cornea
• Conducts clinical research on eye health including studies on protective ocular agents
• Published award-winning research on Zinc finger protein gene 469 for keratoconus diagnosis
• Expert in refractive surgery and cataract treatments using multifocal lens implants

30,000+ surgical cases performed – Dr. Baha Toygar is a specialist surgeon at Dunyagoz Eye Hospital Istanbul Etiler. His vision assessments include refractometry to plan precise laser and lens procedures.

• Co-founder and General Secretary of the Black Sea Countries Ophthalmological Society
• Certified international instructor teaching surgeons how to use phakic intraocular lenses
• Moderated the 2019 ESCRS congress symposium on precision intraocular lens predictability
• Member of the American Society of Cataract and Refractive Surgeons
• Specializes in LASIK, LASEK, and ReLEx SMILE laser vision correction

9,000+ surgical cases performed – Dr. Senay Yilmaz is a senior ophthalmologist at Dunyagoz Eye Hospital Istanbul Etiler.

• Performs refractometry to create precise treatment plans for vision correction
• Specializes in pediatric eye care and treating children
• Expert in correcting misaligned eyes through strabismus surgery
• Author of three scientific publications in the field of ophthalmology
• Member of the Turkish Society of Ophthalmology (TOD)