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DCT lens

Development of a specialised contact lens with a built in pressure sensor for continuous determination of intraocular pressure.



Glaucoma represents the most common cause for blindness in the western world This eye condition is often associated with increased intraocular pressure. This may fluctuate considerably, particularly in patients with glaucoma. Its continuous measurement may therefore have an important diagnostic impact.


The Institute of Optometry developed the contact lens geometry, enabling the physical intraocular pressure measurement and taking into account physiological compatibility with the eye.

Project information

Client Ziemer Ophthalmic Systems AG
Implementation FHNW Institute of Optometry
Project partner BFH Institute for Human Centered Engineering
Funding Commission for Technology and Innovation CTI
Project team Professor Dr. Roland Joos