Prof. Dr Theo Seiler, MD, PhD
Managing Director and Head of Ophthalmology
Specialist in Ophthalmology/Anterior Segment
Zurich, Switzerland

 IROC AG - Institute for Refractive and Ophthalmic Surgery - Logo

Ophthalmologist, Anterior Segment, Zurich, Switzerland

Treatment focus

  • Refractive surgery (eye lasers, LASIK, SMILE)
  • Cataract
  • Keratoconus (corneal disease)
  • Eyelid surgery
  • Macular therapy
  • Glaucoma, ocular hypertension

Medical range

Range of Diagnostic Services

  • Visual acuity testing
  • Ocular slit lamp examination
  • Intraocular pressure measurement, pressure profile
  • Fluorescence angiography
  • Optical coherence tomography (OCT)


Range of Therapeutic Services

  • Eyelid surgery, LASIK, SMILE, PRK
  • Maculotherapy: For example, age-related macular degeneration, diabetic retinopathy, hypertensive retinopathy, e.g. by laser therapy, injection of VEGF inhibitors (= drugs that inhibit pathological vascular growth)
  • Cataract surgery (with high-tech support: femtosecond laser, phacoemulsification, special lenses)
  • Retina: retinal detachment, central vein occlusion, central artery occlusion
  • Keratoconus (Customised Crosslinking, CXL)
  • Cosmetic lid operations (for ptosis, entropion, ectropion, eyelid colobomas), malignant tumours (basal ioma, melanomas, squamous cell carcinomas)
  • Glaucomas (glaucoma, laser therapy/SLT, drug therapy by eye drops (carbonic anhydrase inhibitor))
  • Corneal transplants, DALK, DSEK, DMEK


Prof Dr Theo Seiler, MD, PhD is a specialist in ophthalmology and head of the IROC Institute for Refractive and Ophthalmic Surgery in Zurich.

The IROC eye clinic was established in 2002. Under the leadership of Prof Seiler, IROC is known nationally and internationally as a highly qualified modern eye centre with many years of practical experience in eye surgery as well as intensive research activities.

The specialist team offers a complete spectrum of eye medicine at its eye clinic. Prof Seiler and his colleagues put an emphasis on friendliness, working at the highest scientific standards and offering precise diagnostics and therapy.

Finally, life without glasses

The speciality of Prof Dr Seiler, refractive surgery, is operative correction of ocular aberrations. He can help his patients in the long-term and enable them to live a life without glasses. LASIK (laser-assisted in situ keratomileusis) is the most common form of laser vision correction. In addition, the cornea responsible for defective vision can also be surgically modified by photorefractive keratectomy (PRK) or SMILE (Small Incision Lenticule Extraction). During an extensive preliminary examination, you can turn to Prof Seiler in regards to any questions. If you want to finally enjoy sports and everyday life without annoying glasses getting in your way, please contact our specialists!

Clear vision, even in old age

With an increasing predicted life span, your chances of experiencing clouding of the ocular lens, also known as cataract, are increased. Patients complain of a veil of fog in their field of vision and a strong glare from bright lights during the day or at night, due to increased light refraction in the diseased lens. In general, everyone develops turbidity of the eye lens, which is primarily related to UV exposure experienced during everyday life. In addition, there are also cataracts which are congenital or arise early in children, which can result in total blindness. Cataract surgery is the most common surgery performed on the eye, and Prof Dr Seiler and his team have many years of experience.

Keratoconus in specialist hands

Prof Dr Seiler is primarily a specialist in the operative field of the anterior eye segment. He is one of the pioneers of refractive surgery, especially in the area of ​​the cornea. For example, Prof Seiler was involved in the invention of the crosslinking of the cornea in keratoconus.

A disease that Prof Seiler regularly confronts is the so-called Keratoconus. In this case, severe deterioration of visual acuity usually results in a dominant eye due to progressive corneal changes. The disease usually affects both eyes and was previously only treatable by a corneal transplant. A highly modern form of therapy is Customised Crosslinking, in which the changes of the cornea can usually be slowed down or even stopped, and the patient can be given sufficient eyesight.

Eyesight and good visual acuity are decisive for a high quality of life and for the ability to participate in everyday life. If you are experiencing deterioration of your vision, please contact Prof Dr Seiler.

To get to the website of Prof Dr Theo Seiler, MD, PhD, click here.

Curriculum vitae


School leaving exam & university entrance qualification in Ravensburg / Germany

1968 - 1972

Studied medicine, mathematics and physics at the universities of Heidelberg and Berlin


PhD in Experimental Physics at Freie Universität Berlin.

1975 - 1980

Senior Assistant Master at the Peter-Silbermann Kolleg Berlin and academic council at Freie Universität Berlin


Licence to practice medicine

1980 – 1985

Assistant doctor and doctorate at the Ophthalmic Clinic, Freie Universität Berlin

1985 – 1990

Senior physician and lecturer at the Ophthalmic Clinic, Freie Universität Berlin


Professor of Ophthalmology at Freie Universität Berlin


Professor and Director at the Ophthalmic Clinic of Dresden University of Technology

2000 – 2002

Professor and Director at the Ophthalmic Clinic, University Hospital of Zurich

From 2002 until today

IROC Private Clinic, Zurich

Medical team

  • Dr Michael Wolff
    FMH Ophthalmologist, eye surgery specialist

  • Dr Tobias Koller
    FMH Ophthalmologist, eye surgery specialist

  • Dr Uwe Press
    FMH Ophthalmologist, eye surgery specialist

  • Prof Dr Gerald Schmidinger
    FMH Ophthalmologist, eye surgery specialist

  • PD Dr Aharon Wegner, MD
    FMH Ophthalmologist, eye surgery specialist

  • Dr Valéry Vinzent Wittwer
    FMH Ophthalmologist


Regular information sessions on ophthalmic lenses

Specialist in Ophthalmology/Anterior Segment Prof. Dr Theo Seiler, MD, PhD - Portrait Prof. Dr Theo Seiler, MD, PhD

Ophthalmology/Anterior Segment
Stockerstrasse 37, CH-8002 Zurich

Monday - Friday 8:00 - 17:00
Wednesday additional evening hours
17:00 - 19:00


Zurich Central Railway Station

2 km

Zurich Airport

11 km

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Prof. Dr Theo Seiler, MD, PhD
Managing Director and Head of Ophthalmology

IROC AG - Institute for Refractive and Ophthalmic Surgery
Stockerstrasse 37, CH-8002 Zurich

T: +41 43 488 38 00
F: +41 43 488 38 09


Monday - Friday 8:00 - 17:00
Wednesday additional evening hours
17:00 - 19:00



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