June 1968
Volume 7, Issue 3
Free
Articles  |   June 1968
Red-Free Light Fundus Photography
Author Affiliations
  • K. MIZUNO
    Department of Ophthalmology, Nagoya City University Medical School Mizuho-Ku, Nagoya, Japan
  • A. MAJIMA
    Department of Ophthalmology, Nagoya City University Medical School Mizuho-Ku, Nagoya, Japan
  • K. OZAWA
    Department of Ophthalmology, Nagoya City University Medical School Mizuho-Ku, Nagoya, Japan
  • H. ITO
    Department of Ophthalmology, Nagoya City University Medical School Mizuho-Ku, Nagoya, Japan
Investigative Ophthalmology & Visual Science June 1968, Vol.7, 241-249. doi:
  • Views
  • PDF
  • Share
  • Tools
    • Alerts
      ×
      This feature is available to authenticated users only.
      Sign In or Create an Account ×
    • Get Citation

      K. MIZUNO, A. MAJIMA, K. OZAWA, H. ITO; Red-Free Light Fundus Photography . Invest. Ophthalmol. Vis. Sci. 1968;7(3):241-249.

      Download citation file:


      © ARVO (1962-2015); The Authors (2016-present)

      ×
  • Supplements
Abstract

Red-free light fundus photography has been developed to compare rhodopsin contents in the retina during light and dark adaptations by means of a filter with a wavelength of 500 nm. In order to avoid a probable artifact by the photographic procedure, half of the fundus, either upper or lower half, is irradiated after dark adaptation, and a red-free light fundus photograph is taken. This half occlusion procedure is assumed to be similar to an optogram and is able to differentiate the degree of rhodopsin contents in situ in the same picture. The new technique has also opened new vistas in determining retinal regions lacking the ability of rhodopsin synthesis in patients with night blindness. This principle is also applicable to detect minimum changes in the vascular system and nerve fibers in the retina.

×
×

This PDF is available to Subscribers Only

Sign in or purchase a subscription to access this content. ×

You must be signed into an individual account to use this feature.

×