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Br J Ophthalmol 2004;88:1232-1233 doi:10.1136/bjo.2004.051748
  • Editorial

Frequency doubling technology perimetry for neuro-ophthalmological diseases

  1. C A Johnson
  1. Correspondence to: C A Johnson Discoveries in Sight, Devers Eye Institute, Legacy Health Systems, 1225 NE Second Avenue, Portland, OR 97208, USA; cajohnsondiscoveriesinsight.org

    It will be beneficial to all eye care practitioners if investigations of a wide variety of ocular and neurological diseases are evaluated with FDT perimetry

    In the past decade, there have been many advances in diagnostic test procedures for evaluation of structural and functional changes affecting the visual pathways. Perimetry and visual field testing have undergone improvements that allow tests to be performed more efficiently and accurately, detect earlier signs of pathological changes, quantitatively evaluate progressive losses, and provide enhanced diagnostic information.1–3 One of these emerging visual field test procedures is frequency doubling technology (FDT) perimetry, which has been shown to be effective in detecting visual field loss produced by glaucoma and other visual disorders,4 and may detect early perimetric changes before standard …

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