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Abstract #6373 Published in IGR 3-2
Construction, calibration and results of a new sensor in an intraocular lens with telemetric transmission of the intraocular pressure
Hille K; Draeger J; Eggers T; Stegmaier PKlinische Monatsblätter für Augenheilkunde 2001; 218: 376-380
BACKGROUND: At present intraocular pressure (IOP) is measured indirectly by applanation or impression of the cornea. Only isolated values are available with this method. The authors present a new implantable system for the direct and continuous measurement of IOP. METHODS: An implantable system consisting of a miniaturized sensor and telemetric unit was integrated into an intraocular lens. The eye pressure is determined by the sensor, modulated and transduced by the telemetric system. By an extracorporeal receiver, the signal is demodulated. The electric supply of the intraocular system is achieved by external electromagnetic induction. RESULTS: The telemetric transmission of IOP can be achieved with an accuracy of ±1 mmHg and a frequency of registration of three values per second. CONCLUSION: Clinical application necessitates further animal trials in vivo. LA: German
Dr K. Hille, Augenklinik der Universität des Saarlandes, D-66421 Homburg/Saar, Germany. aukhil@med.rz.uni-sb.de
Classification:
6.1 Intraocular pressure measurement; factors affecting IOP (Part of: 6 Clinical examination methods)