Diopsys® ffERG / Flash Plus PhNR

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Early Detection.

Early detection and treatment can protect your patients’ eyes against serious vision loss. What do you do when your other testing is questionable, borderline, or unreliable? Diopsys® ffERG / Flash Plus Photopic Negative Response  (PhNR) vision tests provide you with objective information on retinal ganglion cell (RGC) function. These test results  help you identify disorders that affect the innermost retina, including glaucoma and other forms of optic neuropathy.1-6 Diopsys® ffERG / Flash Plus PhNR testing is performed in a lit room without the need for refraction.

  • Objectively measure functional loss and recovery1
  • Detect early signs of RGC dysfunction, including glaucoma1-6
  • Clear, intuitive report interpretation

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Full Field Electroretinography (ffERG) / Flash Plus
Photopic Negative Response Vision Testing

The photopic negative response (PhNR) of the full field ERG provides information about the function of retinal ganglion cells (RGCs) and their axons. This testing has been recognized as effective in helping eye care specialists detect early signs of optic nerve and retinal disease affecting RGC function, including glaucoma, ocular hypertension, and optic atrophy, among others.1-6

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Resources

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[/vc_column_text][/vc_tta_section][vc_tta_section title=”Request More Information” tab_id=”request-more-information”][vc_raw_html 0=””]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[/vc_raw_html][/vc_tta_section][/vc_tta_accordion][vc_empty_space height=”30px”][vc_separator color=”custom” accent_color=”#d2dcea”][vc_column_text el_class=”references”]

  1. Frishman L, et al. ISCEV extended protocol for the photopic negative response (PhNR) of the full-field electroretinogram. Doc Ophthalmol. 2018;136:207-211.
  2. North RV, et al. Electrophysiological Evidence of Early Functional Damage in Glaucoma and Ocular Hypertension. Invest. Ophthalmol. Vis. Sci. 2010;51(2):1216-1222.
  3. Viswanathan S, et al. The Photopic Negative Response of the Flash Electroretinogram in Primary Open Angle Glaucoma. Invest. Ophthalmol. Vis. Sci. 2001;42(2):514-522.
  4. Machida S, et al. Photopic negative response of focal electoretinograms in glaucomatous eyes. Invest Ophthalmol Vis Sci. 2008;49:5636-44.
  5. Gotoh Y, et al. Selective loss of the photopic negative response in patients with optic nerve atrophy. Arch Ophthalmol. 2004;122:341–346.
  6. Miyata K, et al. Reduction of oscillatory potentials and photopic negative response in patients with autosomal dominant optic atrophy with OPA1 mutations. Invest Ophthalmol Vis Sci. 2007;48:820–824.

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