Professional, reliable and comprehensive

After Sales Service

NegahTeb offers the service you trust, Professional, reliable and comprehensive. Our teams of specialized competent engineers are at your disposal 24 hours a day, seven days a week. Get instant support whenever and wherever you need it by calling our numbers.

Telephone Technical Support:






Customer Service & Support 

NegahTeb’s preventive maintenance program for DORC products is aimed at achieving an effective lifecycle performance in terms of longevity, quality, reliability and cost of ownership. An after sale service contract is concluded with customers for devices that are out of warranty in order to ensure the performance of all parts of the device. The most important objectives for our customer service:

Application & User training of equipment and instruments

Ensures the correct maintenance for the equipment and its application

Identification and provision of the correct consumables and part replacements

Certified engineers to help maintain the validity and compliance of instrument functions

The benefits are: maximizes performance by reducing failure and loss of quality & maintains the equipment’s quality through its lifecycle, avoiding potentially expensive failures.

How does it work?

Certified engineers verify the instruments & equipment performance against original specification & testing Full function of them under normal conditions.


Please make sure that all instruments that are being returned to NegahTeb for repair are cleaned & sterilized.

DORC locations
Search for contact details per location

D.O.R.C. Dutch Ophthalmic Research Center (International) B.V.

Visiting address:Kerkweg 47e, 3214 VC Zuidland, The Netherlands

Postal address:P.O. Box 43, 3214 ZG Zuidland, The Netherlands

Telephone number:+31 181 458080

Fax number:+31 181 458090

D.O.R.C. GmbH

Visiting address:Mariahilfer Strasse 123 3. Floor, 1060 Vienna, Austria

Telephone number:+43 1 599­ 99 630

Fax number:+43 1 599 99 700

Dutch Ophthalmic Research Center International Shanghai Representative Office

Visiting address:F29, Shanghai Kerry Centre No. 1515 West Nanjing Road Shanghai, 200040 China

Telephone number:0086 (21) 6103 7339

Fax number:0086 (21) 6103 7340

D.O.R.C. Deutschland GmbH

Visiting address:Monschauer Straße 12, 40549 Düsseldorf, Germany

Telephone number:+49 (0)­ 211­ 5229-1580

Fax number:+49 (0)­ 211­ 5229-1585

D.O.R.C. France S.A.R.L.

Visiting address:Immeuble A – 5ème étage 6-8, rue du 4 Septembre 92130 Issy Les Moulineaux

Telephone number:+33­ 1 70 82 47 67

Fax number:+33 1 70 82 47 99

D.O.R.C. Italy S.r.l.

Visiting address:Via Paracelso 26, 20864 Agrate Brianza MB, Italy (Centro Direzionale Colleoni, Palazzo Cassiopea 3)

Telephone number:+39 (0) 2 00696401

Fax number:+39 (0) 2 00696400

D.O.R.C. España, S. L.

Visiting address:Avda. Diagonal 640, 6ª planta, 08017 Barcelona

Telephone number:0034 900 649 006 / 0034 93 445 3

Fax number:0034 93 228 78 99

D.O.R.C. Scandinavia AB

Visiting address:Bettorpsgatan 10 SE-703 69 Örebro, Sweden

Telephone number:+46­ 1912 1514

Fax number:+46 1918 8204

D.O.R.C. Limited

Postal address:Millhouse, 32-38 East Street, Rochford, Essex, SS4 1DB United Kingdom

Telephone number:+44 (0) 800 051 8377

Dutch Ophthalmic USA, Inc. (US / Canada)

Visiting address:Dutch Ophthalmic USA 10 Continental Drive, Bldg 1 Exeter, NH 03833, U.S.A.

Telephone number:+1800­75 DUTCH or +1603­7786929

Fax number:+1 603 778 0911

DORC Distribution in Iran, NegahTeb Ltd.

DORC Distribution in Iran, NegahTeb Ltd.

Postal address:No 308, Gol Building, Gol Alley, Valiasr St., Tehran, Iran

Telephone number:



Fax number:


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