Swiss manufacturer of the glasses-free Lang-Stereotests, Lang-Stereopads and orthoptic fixation aids
Lang-Stereotest AG
Küsnacht (Switzerland)New on Amplifa
About Lang-Stereotest AG
Lang-Stereotest AG, based in Küsnacht near Zurich, develops and markets orthoptic test products for binocular diagnostics. The core product is the glasses-free random-dot stereotest invented in 1980 by the Swiss ophthalmologist Prof. Dr. med. Joseph Lang, which combines random-dot stereograms with a cylindrical-lenticular (lenticular/cylindrical raster) film. The product range includes the revised versions LANG-STEREOTEST® I-R (2021) and II-R (2023), the modular LANG-STEREOPAD® with magnetic test cards on a test plate with a PVC surface and stainless steel core, as well as fixation cubes and fixation sticks. The products are Class I medical devices under the MDR (Regulation EU 2017/745) and UKCA and are used by ophthalmologists, paediatricians, orthoptists, optometrists, school doctors and public health authorities, among other things in preventive screening examinations and occupational fitness tests. The products are manufactured in Switzerland and distributed worldwide via distributors; the family business is run by the third generation.
- Site
- CH-8700 Küsnacht
- Processes
- Development and manufacture of orthoptic test products (Class I medical devices), International distribution via distributors, Quality management in accordance with MDR and UKCA, Translations of the instructions for use into national languages
- Materials
- PVC (soft surface of the test plate), Stainless steel (core of the test plate, magnetic stand), PVC, Stainless steel, Lenticular/cylindrical raster film
- Certificates
- CE marking, Class I medical device (Regulation EU 2017/745, MDR), Class I medical device (MDR 2017/745, UKCA)
- Founded
- 1998 (conv
- Industries
- Medical technology / Medical devices, Ophthalmology / Orthoptics, Eye health screening (paediatric and school preventive care), Occupational fitness examinations (e.g. pilots, crane operators, driving
- 01
Development
- 02
Printing and finishing of the test products (Switzerland)
- 03
Quality management in accordance with MDR/UKCA
- 04
Translation of the instructions for use into national languages
- 05
International distribution via distributors
Materials & Processes
PVC
Soft surface of the red test plate of the Lang-Stereopad®.
Stainless steel
Core of the test plate as well as material of the magnetic stand of the Lang-Stereopad®.
Lenticular/cylindrical raster film
Covering cylindrical raster film for image separation of the random-dot stereograms.
Location
Küsnacht
CHHeadquarters, development, quality management and distribution
- Materials
- PVC, stainless steel
Products & Components
Inside the production
Industries
Additional services
Reference customers
Quality & Certification
The products are CE-marked Class I medical devices under Regulation (EU) 2017/745 (MDR) and UKCA; quality management is the responsibility of Dr. med. Thomas Lang.
| Evidence | Küsnacht |
|---|---|
| Class I medical device (MDR 2017/745, UKCA) |
History
- 1980
Invention of the glasses-free Lang-Stereotest® by the Swiss ophthalmologist Prof. Dr. med. Joseph Lang
- 1983
Founding of the sole proprietorship Lang-Stereotest by J. Lang
- 1998
Conversion into Lang-Stereotest AG based in Küsnacht near Zurich
- 2017/2018
Development and market launch of the LANG-STEREOPAD® for determining the stereoacuity threshold (preferential looking method)
- 2021
Market launch of the revised version LANG-STEREOTEST® I-R
- 2023
Market launch of the revised version LANG-STEREOTEST® II-R
- 2025
End of 2025: 180'000 Lang-Stereotests, 510 Lang-Stereopads and 81'500 Lang fixation aids in use worldwide; new distributors in Canada (WhiteOP) and West Africa (Ophtazon)