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Optical solutions - seeing more



VTT’s light source for fundus cameras reveals more about the retina

VTT has developed a MEMS-based Fabry-Perot interferometer which could serve as a tuneable optical filter for use with spectral cameras and light sources. VTT’s Fabry-Perot technology enables the development of a fast handheld fundus camera that can be used for future screening of eye diseases. For example, changes in the retina can be detected with spectral imaging and the information used in early diagnostics of diabetes.

VTT has studied medical applications of spectral and thermal imaging in cooperation with Kuopio University Hospital and the University of Eastern Finland. Research has included the use of a Fabry-Perot-based filter component in retinal imaging and brain surgery. One of the project goals was to develop a prototype imaging device that can be used in checking the condition of the retina for potential abnormal features.

VTT’s medical prototype is based on a Fabry-Perot filter and visible light source. The light source provides rapid illumination of the retina at different wavelengths, each wavelength producing a different kind of information. Combining this information enables the construction, for example, of an oxygen saturation map of the retina. VTT’s FPI-based fundus camera has been tested at Kuopio University Hospital, where initial results have been very promising. Potential applications of spectral imaging include the screening of diabetes, glaucoma, and age-related macular degeneration.

Fabry-Perot-based filter technology enables the development of small-sized and portable imaging medical devices. VTT welcomes industrial partners in developing new Medical & Health Care sensors and applications with us.

Further information:

Marko Kaarre
Tel. +358 40 094 1921