Telefon +49 (0) 221.12 37 34

Consultation days

Jan 27
Bonn, Universitäts-Augenklinik

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Feb 02
Aachen, Rehaklinik An der Rosenquelle

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Feb 03
Hagen, St.-Josef-Hospital

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Feb 09
Düsseldorf, Institut W. Trester

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More dates will follow


gemäß § 5 TMG
W. Trester – Institut für Augenprothetik GmbH
Geschäftsführer: Marc Trester, Wolfgang Trester
Neusser Straße 3 (am Ebertplatz, Neustadt Nord)
D-50670 Köln

Telefon +49 221.12 37 34
Telefax +49 221.13 54 50

E-Mail info[at]

Inhaltlich Verantwortlicher gemäß § 10 Absatz 3 MDStV
Wolfgang Trester, Marc Trester (Anschrift wie oben) 



HRB 71163

IK Nummer 


Liability for content

Pursuant to § 7 Par. 1 TMG, as a service provider we are responsible for our own contents on these pages according to the general laws. But according to §§ 8 to 10 TMG, as a service provider we are not obligated to monitor conveyed or stored outside information or to research for circumstances which are indicative of unlawful activity. Obligations pertaining to removal or blocking the utilisation of information according to the general laws remain unaffected by this. However, a liability in this connection is only possible from the point of cognizance of a specific infringement. These contents will be immediately removed upon discovery of any corresponding infringements.

Liability for links

Our offer contains links to external third party websites, the contents of which we have no influence over. Therefore we cannot assume any guarantee for such external contents. The respective provider or operator of the website is always responsible for the contents of linked websites. The linked websites were scrutinised for possible statutory violations at the time of linking. Unlawful contents were not discernible at the time of linking. However, a permanent contextual control of the linked websites is not reasonable without specific indications of an infringement. We will immediately remove such links upon discovery of infringements.

The contents and work compiled on these pages by the website operator are subject to German copyright law. The reproduction, handling, dissemination and any form of exploitation beyond the ambit of copyright law require the written consent of the respective author or originator. Downloads and copies of these pages are only allowed for private, non-commercial usage. Insofar as the contents on these pages have not been compiled by the operator, the copyrights of third parties will be heeded. In particular, the contents of third parties will be identified as such. Nevertheless, should you become aware of a copyright infringement, we request an appropriate reference. We will immediately remove such contents upon discovery of infringements.  Source: Disclaimer eRecht24

Data protection
The use of our website is usually possible without providing personal information. The collection of any personal data (such as name, address or e-mail address), this is as far as possible, on a voluntary basis. This data is used without your express consent to third parties.We point out that data transmission over the Internet (eg communication by e-mail) security vulnerabilities. A complete protection of data against unauthorized access by third parties is not possible.

The use of the framework of the imprint obligation published contact data by third parties for the transmission of unsolicited advertising and information materials is strictly prohibited. The site operators reserve the right to legal action in case of unsolicited advertising, such as spam e-mails. 

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When you visit our pages, the plugin creates a direct connection between your browser and the Facebook server. Thus, Facebook receives the information that you have visited our page from your IP Address. When you click on Facebook’s Like button while you are logged in to your Facebook account, you can link the contents on our pages with your Facebook profile. In this way, Facebook can assign your visit to our pages to your user account. Please note that as page provider we do not have any knowledge of the content of the data transmitted nor Facebook’s use thereof. You can find more information regarding this on Facebook’s data protection declaration via

If you do not want Facebook to assign your visit to our pages on your Facebook user account, please log out of your Facebook user account.  Source: Data protection declaration from eRecht24, the portal for internet law from lawyer Sören Siebert, Facebook-disclaimer.

Data protection declaration for Google +1 users:
Using the Google+1 button you can publish information globally. Using the Google+1 button you and other users will receive personalised contents from Google and our partners. Google saves both the information for the content that you add a +1 to as well as information about the page where you were looking at when you clicked +1. Your +1 can appear as references together with your profile name and photo on Google services such as for example search results or in your Google profile, or in other places on websites or internet advertisements. Google saves information about your +1 activities in order to improve Google services for you and others. In order to use the +1 button, you will require a globally visible, public Google profile that must at least contain the name chosen for this profile. This name is used for all Google services. In some cases, this name is replaced by another name, if you have used this when sharing content via your Google account. Other users can see the identity of your Google address if they know your email address or if they have access to other identifying information. Use of information captured: Besides the uses outlined above, information you provide is used according to the applicable Google data protection provisions. Google may possibly publish summarised statistics regarding user’s +1 activities or pass these on to users and partners, such as for example publishers advertised or associated websites.

Data protection declaration for Twitter users

© André M. Hünseler, Marc Trester, Martin Magiera, Jchambers/, Michael Utech/, carmebalcells/, Thomas Saupe/, hsvrs/, Andreas Weber/, waeske/, interlight/, bpk Berlin, Ouevre 1551 A. Paré Paris, Sammlung Christoph Müller Uri Wiesbaden, Universitäts Bibliothek, Nieden 1894, Dr. Martin Zürich, Hazard Mirault, Dr. Coulomb, Hoppersheide/Schildgen

Concept, design and implementation

/magiera – Büro für Gestaltung, Köln (Office for Design, Cologne)

Our Address

W. Trester - Institute for
Ocular Prosthetics GmbH

Neusser Straße 3
D-50670 Köln (am Ebertplatz)


Tel +49 (0) 221.12 37 34
Fax  +49 (0) 221.13 54 50

Email info[at]

Opening times

Our opening times

Monday to Thursday
8.30am to 5.00pm
Fridays 8.30am to 4.00pm