A low-power, LED-based, high-brightness anomaloscope

Vision Res. 2006 Oct;46(22):3775-81. doi: 10.1016/j.visres.2006.06.019. Epub 2006 Aug 30.

Abstract

Color matches made with a Nagel anomaloscope are used in the differentiation of color vision deficiencies. When these color matches are made over a wide range of retinal illuminances, the changes in the color match provide information about the regeneration kinetics and the absorption spectra of the middle- and long-wavelength cone photopigments. These steady-state color matches vary with a variety of conditions, and may have value in screening for eye disease. Recently, high-brightness LEDs have become available that allowed us to construct a LED-based, high-brightness anomaloscope. We used inexpensive, low-energy components to replicate an earlier instrument, getting a maximum retinal illuminance over 5.6 log Trolands.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • Adaptation, Ocular / physiology
  • Adult
  • Aged
  • Color Perception / physiology
  • Color Perception Tests / instrumentation*
  • Color Vision Defects / diagnosis*
  • Color Vision Defects / physiopathology
  • Electronics
  • Equipment Design
  • Female
  • Humans
  • Light
  • Male
  • Middle Aged
  • Optics and Photonics
  • Pilot Projects
  • Psychophysics
  • Reproducibility of Results
  • Retina / physiopathology
  • Retinal Cone Photoreceptor Cells / physiology
  • Retinal Pigments / physiology

Substances

  • Retinal Pigments