Related Experiment Video
Updated: Jul 23, 2026
14:33
Morphometric Analyses of Retinal Sections
Published on: February 19, 2012
[Morphometry of protuberant changes of the optic nerve head]
1Department of Ophthalmology, Asahikawa Medical College, Japan.
Nippon Ganka Gakkai Zasshi
|July 1, 1995
Summary
This study validates a 3D digital image analyzer for measuring optic nerve head volume. The method demonstrates good accuracy and reproducibility for evaluating conditions like optic neuritis and papilledema.
Area of Science:
- Ophthalmology
- Medical Imaging
- Biomedical Engineering
Background:
- Accurate volumetric measurement of the optic nerve head (ONH) is crucial for diagnosing and monitoring optic neuropathies.
- Traditional methods may lack the precision required for subtle ONH changes.
- Three-dimensional (3D) imaging offers potential for enhanced ONH volumetric analysis.
Observation:
- Volumetric measurements of ONH were performed on normal eyes and those with optic neuritis and papilledema using a 3D computerized digital image analyzer.
- Intraphotographic and interphotographic error variance were assessed to determine data reliability.
- The coefficient of variation for elevated ONH volume was consistently small, indicating good reproducibility.
Findings:
- The 3D digital image analyzer demonstrated good reproducibility for ONH volumetric measurements.
- Intraphotographic study showed a mean coefficient variation of 4.5% (range: 1.0-8.3%).
- Interphotographic study revealed a mean coefficient variation of 6.5% (range: 0.8-11.5%) in optic neuritis and papilledema cases.
- The accuracy was deemed sufficient for clinical use, with a measuring error threshold of <0.05 mm.
Implications:
- This 3D imaging technique provides a reliable and accurate tool for objective ONH evaluation.
- Clinical application can aid in the early detection and management of optic nerve head pathologies.
- The findings support the use of this technology for research and patient care in ophthalmology.
