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Quantitative evaluation of pallor-disc ratio and colour of the optic disc by a photographic method

  • H. -J. Zenker
  • P. Mierdel
  • E. Marré
Article

Abstract

A photographic technique is described, which is based on simultaneous photography of the papilla with green and red filters by means of a stereoscopic fundus camera. Using black and white film, the negatives are photometrically measured and the pallor-disc ratio and colour of the papilla are calculated from the densitometric tracings. The latter parameter is quantitatively expressed by a numerical index. The method is demonstrated in a practical example.

Keywords

Public Health Colour Quantitative Evaluation Optic Disc Photography 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Zusammenfassung

Es wird ein photographisches Verfahren beschrieben, das auf der gleichzeitigen Aufnahme der Papille mit einem grünen und roten Filter mittels einer Stereo-Funduskamera beruht. Die Schwarz-Weiß-Aufhahmen werden photometrisch ausgemessen und bilden die Grundlage für die Bestimmung des relativen Blässe-Areals und der Farbe der Papille. Letztere wird durch einen numerischen Index quantitativ ausgedrückt. Die Methode wird an Hand eines praktischen Beispiels demonstriert.

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Copyright information

© Springer-Verlag 1983

Authors and Affiliations

  • H. -J. Zenker
    • 1
  • P. Mierdel
    • 1
  • E. Marré
    • 1
  1. 1.Augenklinik derMedizinischen Akademie “Carl Gustav Carus”DresdenGerman Democratic Republic

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