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E. F. Smith, E. C. Canellos, P. D. Berg, A. Schrier, P. Eze, M. Fingeret; Frequency Doubling Perimetry in Neurological Visual Field Defects. Invest. Ophthalmol. Vis. Sci. 2007;48(13):933.
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© ARVO (1962-2015); The Authors (2016-present)
To evaluate the ability of frequency doubling technology using the FDT Matrix to identify and characterize neurologic visual field defects.
10 patients with known neurologic visual field defects underwent conventional 24-2 SITA standard testing and frequency doubling perimetry with the Matrix FDT 24-2-5 screening strategy.
Screening FDT detected 29 of 31 involved quadrants present on Humphrey 24-2 testing (93.0%). There were 9 of 45 quadrants falsely identified as involved (20%).
Visual field defects which are caused by neurologic pathology are able to be identified and quantified by FDT at the same performance levels as conventional automated perimetry .There is a tendency for FDT perimetry to overestimate the VF defect in neurologic disease.
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