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Abstract #21242 Published in IGR 10-2
Understanding eye deformation in non-contact tonometry
Kempf R; Kurita Y; Iida Y; Kaneko M; Mishima HK; Tsukamoto H; Sugimoto EConference proceedings : Annual International Conference of the IEEE Engineering in Medicine and Biology Society 2006; 1: 5428-5431
Non-contact tonometers are widely used to measure the internal eye pressure, i.e., the intraocular pressure (IOP), which is an important parameter for the diagnosis and treatment of glaucoma. During the measurement, the eye is deformed by a short air pulse. Commonly the pressure dependent deformation is estimated from the time when the eye becomes flat, which is derived from the monitored reflection of an incident infrared light. We used a high speed camera to capture the complete motion of the eye directly and obtain more data during the pressure measurement. Assuming a simple eye model with non-linear material properties of the cornea, we extend our previous analysis of the motion of the eye, and obtain a similar principle shape of the eye deformation as observed in the experiments.
Dr. R. Kempf, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima, Japan. info@r-kempf.de
Classification:
6.1.1 Devices, techniques (Part of: 6 Clinical examination methods > 6.1 Intraocular pressure measurement; factors affecting IOP)
2.2 Cornea (Part of: 2 Anatomical structures in glaucoma)
