Ophthalmologist, Anterior Segment, Zurich, Switzerland

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

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

About Prof. Dr Theo Seiler, MD, PhD

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!

At the YOUSEEZÜRI Eye Laser Centre, the subsidiary clinic of IROC, founded in 2018, a team of experts who have been trained at IROC offers standard eye laser technology at the highest medical level at reasonable prices.

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.

Further information is available at the IROC Eye Clinic and YOUSEEZÜRI Laser Eye Centre websites.

Curriculum Vitae

1968 School leaving exam & university entrance qualification in Ravensburg / Germany
1968 - 1972 Studied medicine, mathematics and physics at the universities of Heidelberg and Berlin
1974 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
1982 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
1990 Professor of Ophthalmology at Freie Universität Berlin
1993 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


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 44 512 07 61
F: +41 43 488 38 09
E: seiler@primomedico.com


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

Laser Eye Centre
Bahnhofstrasse 69, CH-8001 Zurich

T: +41 44 512 07 67


Tuesday–Friday 10:00 am–8:00 pm
Saturday 9:00 am–2:00 pm

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