Monochromatic (red-free) photography and ophthalmoscopy of the peripapillary retinal nerve fiber layer

N. R. Miller, T. W. George

Research output: Contribution to journalArticle


The appearance of the peripapillary retinal nerve fiber layer (PRNFL) is crucial in the evaluation of patients with presumed optic neuropathies as well as in the differentiation of true optic disc edema from pseudopapilledema. Monochromatic (red-free) photography performed at 2x magnification with a Zeiss fundus camera, a filter with maximum transmission at 540 nm, and Kodak Plus-X black-and-white film provides excellent PRNFL detail. Since direct ophthalmoscopy depends upon maximum illumination, which in turn depends upon increased color temperature of the light source, use of a direct ophthalmoscope with a gas-surrounded tungsten filament light source driven at 4.5V raises color temperature sufficiently to allow practical use of monochromatic, red-free filters for optimum PRNFL evaluation.

Original languageEnglish (US)
Pages (from-to)1121-1124
Number of pages4
JournalInvestigative Ophthalmology and Visual Science
Issue number11
StatePublished - Dec 1 1978


ASJC Scopus subject areas

  • Ophthalmology
  • Sensory Systems
  • Cellular and Molecular Neuroscience

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