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Abstract #10384 Published in IGR 6-1
Reducing noise in suspected glaucomatous visual fields by using a new spatial filter
Gardiner SK; Crabb DP; Fitzke FW; Hitchings RAVision Research 2004; 44: 839-848
Visual field testing with automated perimetry is hampered by the amount of noise present in the readings. The authors derived a physiologically accurate spatial filter to be applied to the data after patient examination. The filter was tested by a Virtual Eye computer simulation. By simulating series of stable fields, it was shown that specificity of determining visual field changes was improved; while simulating progressing fields (based on a map of the optic nerve head) it was shown that sensitivity was also improved. The filter appears to reduce the noise in glaucomatous visual field data and may be clinically useful.
Dr. D.P. Crabb, Faculty of Science, Nottingham Trent University, Clifton Campus, Nottingham NG11 8NS, UK
Classification:
6.6.2 Automated (Part of: 6 Clinical examination methods > 6.6 Visual field examination and other visual function tests)
