IROC Ophthalmic Clinic Zürich: Prof. Dr Dr Rer. Nat. Theo Seiler

IROC AG - Institute for Refractive and Ophthalmic Surgery
Prof. Dr Theo Seiler, MD, PhD and Prof. Dr Maya Müller
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 IROC AG - Institute for Refractive and Ophthalmic Surgery

Prof. Dr Dr Rer. Nat. Theo Seiler is a specialist in ophthalmology and head of the Institute for Refractive and Ophthalmic Surgery IROC in Zurich. The IROC Eye Clinic has existed since 2002. Under Prof. Seiler’s leadership, it is nationally and internationally known as a highly qualified modern eye center with many years of practical experience in eye surgery and intensive research activities.

IROC Ophthalmic Clinic Zurich: Help With Eye Diseases

The team of physicians at the Institute for Refractive and Ophthalmic Surgery Zurich can draw on extensive experience. The eye specialists in Zurich carry out several thousand eye surgeries every year. The well-respected eye clinic IROC in the heart of Zurich is equipped with the latest technology and lasers of the latest generation to meet every challenge.

The team of specialists offers the entire spectrum of eye medicine at its eye clinic. Prof. Seiler and his colleagues place the highest value on friendliness, working to the highest scientific standards, and precise diagnosis and therapy.

Eye Cataract: Clear Vision Even at Old Age

Particularly when getting older, opacity in the ocular lens, the so-called cataract, occurs more frequently. Patients complain about a film in the visual field and, at the same time, the intense glare from the exposure of light or at night due to increased refraction of light in the diseased lens. In general, all people develop an opacity in the ocular lens; this is primarily related to UV exposure during increasing life. Besides, there are also forms of cataract, which are congenital or occur in early childhood, which can cause complete blindness. Cataract surgery is the most common surgery carried out by ophthalmologists, and Prof. Dr Dr Seiler and his team have many years of experience.

Keratoconus in the Hands of Specialists

Prof. Dr Dr Seiler is primarily a specialist for surgeries in the anterior segment of the eye. He is one of the pioneers of refractive surgery, especially in the corneal area. Prof. Seiler was involved in the invention of corneal crosslinking for keratoconus in 1995.

Prof. Seiler is regularly confronted with the clinical picture of the so-called keratoconus. This disease leads relatively quickly to a severe deterioration of the visual acuity, usually in the dominant eye due to progressive corneal changes. The disease often affects both eyes and was only treatable by corneal transplantation in the past. A highly modern form of therapy is customized crosslinking, in which the changes in the cornea can usually be slowed down or even stopped and patients can be given sufficient vision.

Eyesight and good visual acuity are decisive for a high quality of life and for participating in everyday life. If your vision is deteriorating, please contact Prof. Dr Dr Seiler with confidence.


Glaucoma is a degenerative eye disease caused by elevated intraocular pressure and a thickened cornea, which leads to blindness if left untreated. If detected early enough, glaucoma can be successfully treated with a new type of laser therapy. In SLT (selective trabeculoplasty), a laser with short, high-energy laser light pulses is used to act on pigment cells containing melanin selectively. As a result, other cells are largely spared and remain intact.

Age-Related Macular Degeneration (AMD) 

Age-related macular degeneration is the most common reason for the deterioration of vision in old age. At an older age, it comes to changes in the middle of the retina (macula), which causes a progressive decrease of visual acuity in the middle of the eye. The moist form of age-related macular degeneration can be treated with injections into the posterior segment of the eye at intervals of several weeks.

Diabetics Retinopathy And Hypertensive Retinopathy

Patients who have diabetes have an increased risk of damage to the retina. High blood sugar levels can cause severe damage to the tiny veins that supply nutrients to the retina and visual cells. But, high blood pressure can also be responsible for retinopathy. As a result, the retina is insufficiently supplied with blood, and small bleedings occur selectively. At the same time, new blood vessels are increasingly forming. If diabetic retinopathy is not treated in time, it can lead to blindness. Retinal damage that has already occurred cannot be reversed. Early treatment aims to stop the disease and prevent the formation of new blood vessels. Laser therapy, but also injections that inhibit the growth of blood vessels, are effective.

Retinal Detachment

This relatively rare eye disease occurs predominantly in the elderly - but can also affect younger patients. Due to age-related changes, the vitreous body, which adheres to the retina at specific points, becomes smaller. This can cause the retina to tear partially. If fluid penetrates the opening, the retina can detach from its base. Incipient retinal detachment requires immediate treatment, as it can lead to blindness. Existing tears or holes in the retina can usually be treated with a laser - if the retina is already detached, the eye specialist in Zurich carried out a surgery to fix the retina again.

Eyelid Surgery

As a designated specialist in ophthalmology, surgical interventions on the eyelids are also part of Prof. Seiler's treatment focus. Eyelids form a functional unit with the compound eye - that is why eyelid correction also requires the highest level of expertise in ophthalmology. Surgery in the eyelids can be of cosmetic and/or medical nature.

Cosmetics Eyelid Surgery 

A congenital or acquired eyelid malposition (ptosis), in which an eyelid hangs down over parts of the eyeball, is a possible reason for a cosmetic intervention. But also, malpositions of the lid edge, where the lid edge is tilted inwards or outwards (entropion or ectropion), are reasons for having surgery. Likewise, a rather rare congenital cleft formation of the eyelid (lid coloboma). Technically speaking, these are not pure cosmetic eyelid corrections - because the malpositions usually also have a health aspect (restriction of the visual field, mechanical irritation of the cornea, drying of the conjunctiva). But the cosmetic correction of drooping eyelids is also part of Prof. Seiler's range of treatments.

Medical Eyelid Surgery 

Malignant tumors can also develop in the eyelids. The basal cell carcinoma - colloquially, also called white skin cancer, is probably the most common tumor in the eyelid. It mostly affects older people and appears in the form of small lumps on the edge of the eyelid. If removed early, a basalioma does not develop any metastases.

Another type of tumor that can affect the eye is melanoma, a tumor in the choroid that is noticed by tissue growths in the eye. In contrast to the basal cell carcinoma, a uveal melanoma forms distant metastases. Therefore, early surgical removal of the uveal melanoma is particularly important.

Squamous cell carcinoma or epidermoid carcinoma is a rare proliferation of the eyelid, which, like most other eyelid tumors, is associated with excessive exposure to sunlight. Aesthetics also play a role in removing eyelid tumors, where the proficiency of the surgeon is required to achieve an aesthetically pleasing result for the patient.

Eye Laser Center Zurich: Individual Care And Therapy

No two human eyes are the same - consequently, an individual therapeutic approach is required. Prof. Seiler relies entirely on customized treatment concepts that exactly meet the needs of every patient and every eye disease. During a detailed preliminary examination, you can address Prof. Seiler with any questions you may have. If you finally want to enjoy sports and the daily routine without burdening, annoying glasses, contact our specialist!

An expert team trained at IROC offers standard eye laser technology at the highest medical level at reasonable prices in the in 2018 founded, YOUSEEZÜRI Eye Laser Center, the subsidiary clinic of IROC.

Finally, Life Without Glasses

Prof. Dr Dr Seiler’s specialty is refractive surgery, the surgical correction of visual defects. In this way, he can help his patients permanently and enable them to lead a future life without glasses. Currently, the most common form of therapy to correct defective vision is LASIK (laser in-situ keratomileusis). Besides, the cornea responsible for the defective vision can also be surgically modified by photo-ablative refractive keratectomy (PRK) or SMILE (small incision lenticule extraction).

PRK (Photo-Ablative Refractive Keratectomy) 

Photo-ablative refractive keratectomy is one of the oldest and most established laser procedures. Even today, PRK is still one of the most frequently used surgeries when it comes to correcting myopia and astigmatism. During the treatment, the epithelial layer of the cornea is carefully ablated with the laser to eliminate the ametropia. This procedure is also used for surface treatment of corneal scarring. 

SMILE (Small Incision Lenticule Extraction) 

The SMILE method is one of the latest procedures for laser correction of defective vision. In contrast to other techniques, the lenticular tissue previously ablated by the laser is removed through a tiny lateral incision in the cornea - the anterior part of the cornea remains intact. With this practical and gentle method, even the correction of severe ametropia (up to - 10 diopters) is possible.

Please, visit the website of the IROC Ophthalmic Clinic and the YOUSEEZÜRI Eye Laser Center for further information.

Curriculum Vitae

From 2002 until today IROC Private Clinic, Zurich
2000 – 2002 Professor and Director at the Ophthalmic Clinic, University Hospital of Zurich
1993 Professor and Director at the Ophthalmic Clinic of Dresden University of Technology
1990 Professor of Ophthalmology at Freie Universität Berlin
1985 – 1990 Senior physician and lecturer at the Ophthalmic Clinic, Freie Universität Berlin
1980 – 1985 Assistant doctor and doctorate at the Ophthalmic Clinic, Freie Universität Berlin
1982 Licence to practice medicine
1975 - 1980 Senior Assistant Master at the Peter-Silbermann Kolleg Berlin and academic council at Freie Universität Berlin
1974 PhD in Experimental Physics at Freie Universität Berlin.
1968 - 1972 Studied medicine, mathematics and physics at the universities of Heidelberg and Berlin
1968 School leaving exam & university entrance qualification in Ravensburg / Germany

Medical Team

  • Prof. Dr. med. Dr. rer. nat. Theo SeilerProf. Dr Dr rer. nat. Theo Seiler
    FMH Ophthalmologist, eye surgery specialist
  • Prof. Dr. med. Maya Müller Prof. Dr Maya Müller
    FMH Ophthalmologist, eye surgery specialist

  • Dr. med. Michael WolffDr Michael Wolff
    FMH Ophthalmologist, eye surgery specialist

  • Priv.-Doz. Dr. med. Theo G. SeilerPD Dr Theo G. Seiler
    FMH Ophthalmologist, FEBO

  • Dr. med. Tobias KollerDr Tobias Koller
    FMH Ophthalmologist, eye surgery specialist

  • Dr. med. Uwe PressDr Uwe Press
    FMH Ophthalmologist, eye surgery specialist

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

  • Dr. med. Stefanie PapeDr Stefanie Pape
    FMH Ophthalmologist, eye surgery specialist

  • Prof. Dr. med. Mirko Jankov, BA PhDProf. Dr Mirko Jankov, BA PhD





  • Regular information sessions on ophthalmic lenses


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IROC AG - Institute for Refractive and Ophthalmic Surgery
Prof. Dr Theo Seiler, MD, PhD and Prof. Dr Maya Müller

Stockerstrasse 37, CH-8002 Zurich

T: +41 44 512 07 61
F: +41 43 488 38 09


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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