advertisement
Abstract #26744 Published in IGR 12-3
Glaucoma detection by wavelet-based analysis of the global flash multifocal electroretinogram
Miguel-Jimenez JM; Boquete L; Ortega S; Rodriguez-Ascariz JM; Blanco RMedical Engineering and Physics 2010; 32: 617-622
The current clinical analysis of the multifocal electroretinography (mfERG) recordings for detecting glaucoma is based on standard signal morphology, measuring amplitudes and latencies. However, this analysis is not sensitive enough for detection of small changes in the multifocal electroretinogram signals. Other, more sophisticated, analysis methods should be explored to improve the sensitivity of this diagnostic technique, such as the discrete wavelet transform, proposed in this paper. We present an alternative method for the detection of open angle glaucoma based on the characterization of global flash mfERG signals. The digital signal processing technique is based on wavelets, hitherto unused in this field, for detection of advanced-stage glaucoma. Two markers were obtained from the recorded signals by applying the discrete wavelet transform, which help discriminate healthy from glaucomatous signals.
J.M. Miguel-Jimenez. Department of Electronics, Biomedical Engineering Group, University of Alcala, 28701 Alcala de Henares, Spain. jmanuel@depeca.uah.es
Classification:
6.7 Electro-ophthalmodiagnosis (Part of: 6 Clinical examination methods)
