Comparison of photographic techniques and films used in stereophotogrammetry of the optic disk

Marijane A. Krohn, John L Keltner, Chris A. Johnson

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

We compared photogrammetric measurements of optic cup volume, area, and depth made from two types of stereophotography and two types of film to determine their effect on the precision of the measurements. We found that measurements from simultaneous stereophotography (Donaldson stereoscopic fundus camera) had a smaller range of values and a smaller mean percent error than measurements from consecutive stereophotography (Zeiss Fundus Flash II camera). However, a Student's t-test for related measures showed no significant difference. The measurements from Kodachrome 25 film and Kodak Photomicrography film varied in range and mean percent error without a pattern. The Student's t-test for related measures showed no significant difference.

Original languageEnglish (US)
Pages (from-to)859-863
Number of pages5
JournalAmerican Journal of Ophthalmology
Volume88
Issue number5
StatePublished - 1979

ASJC Scopus subject areas

  • Ophthalmology

Fingerprint Dive into the research topics of 'Comparison of photographic techniques and films used in stereophotogrammetry of the optic disk'. Together they form a unique fingerprint.

Cite this