The Swiss company LANG-STEREOTEST AG was founded in 1982 with the purpose of launching the LANG-STEREOTEST I on the International market as well as promoting the development of other products, such as the LANG-STEREOTEST  II, the LANG FIXATION CUBEs and the LANG FIXATION STICKs. From the foundation of the LANG-STEREOTEST® company, more than 100’000 LANG-STEREOTEST I and II were sold worldwide.

The LANG-STEREOTEST I has been produced and sold from 1982 until 2021. It was followed in 2018 by the LANG-STEREOPAD® and, in 2021, by the revised version, the LANG-STEREOTEST® I-R. 

LANG-STEREOTESTS have been most distributed in Germany, France, Italy, the UK, the USA and Japan. Beside ophthalmologists and paediatricians, a very large and still increasing number of general practitioners and school doctors are regularly using the LANG-STEREOTEST® and its successors. Moreover, the LANG-STEREOTESTS have been established by health care policy makers and authorities of many countries as standard screening-tests for stereopsis, to detect cases of beginning or manifest amblyopia, in a wide range o populations, like preschool children, air pilots, fine industry workers, and more.



Obere Heslibachstr. 8
CH-8700 Küsnacht

Telefon: +41 44 910 61 39


UID: CHE-104.461.286
CH-ID: CH-020-3020632-2
EHRA-ID: 425401

Responsible person: Dr. med. Thomas Lang


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