In medical technology, imaging techniques for analysis are often used where intricate lighting geometries can only be realized by specially adapted fiber solutions. Glass fibers are especially used for illumination and imaging in endoscopes where direct lighting is not possible. Spectroscopic diagnostic techniques are another field of application. engionic Fiber Optics has developed special probes specifically for different fields of application. For example, with optodes, a very compact and lightweight design is desired while with arthroscopic probes, a sturdy and easy to be sterilized design has been developed. In addition, fiber-optic sensors in micro-invasive surgery enable the monitoring of parameters such as strain and pressure, as well as the 3-dimensional tracking of movements with catheters or endoscopes.