Radek Girgle, Igor Vicha, Eva Vlkova, Jiri Rozman, Martin Cizek, Jiri Dlouhy (Brno, Czech Republic)


Team of ophthalmologists and bioengineers presents the final version of a three-year development of a new electronic system helping the patients to keep the head in optimal position after vitrectomy. A head mounted device continually monitors the head position and immediately warns the patient whenever the position of the head is not within the ideal range set by the clinician. Position data is stored in regular intervals into the flash memory; each non-ideal head position occurrence is also saved. The designed system is in fact an application of Holter monitoring, biofeedback and biotelemetry.


Head position is described by the means of angle of tilt in all axes. As a sensing element a 3D accelerometer is utilized. Computer software for data acquisition and analysis is also a part of the system. During postoperative examinations, position data can be downloaded to the host computer at the clinic, further analyzed and confronted with the actual therapy results.

Effectiveness / Safety:

Proposed solution will improve results of vitreoretinal surgery procedures. Supported by Czech Science Foundation: project No. 102/08/1373.

Take home message:

Postoperative monitoring of patients head position will improve results of vitrectomy with gas tamponade.