Reproducibility of the optic nerve head topography with a new laser tomographic scanning device
Background: Laser scanning tomography has been shown to be an accurate and reliable method for the assessment of the three-dimensional optic disc topography. The authors investigate the reliability of morphometric measurements with the Heidelberg retina tomograph, a new instrument which was designed...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article (Journal) |
| Language: | English |
| Published: |
June 1994
|
| In: |
Ophthalmology
Year: 1994, Volume: 101, Issue: 6, Pages: 1044-1049 |
| ISSN: | 1549-4713 |
| DOI: | 10.1016/S0161-6420(94)31220-6 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/S0161-6420(94)31220-6 Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S0161642094312206 
|
| Author Notes: | Klaus Rohrschneider, Reinhard O.W. Burk, Friedrich E. Kruse, Hans E. Völcker |
| Summary: | Background: Laser scanning tomography has been shown to be an accurate and reliable method for the assessment of the three-dimensional optic disc topography. The authors investigate the reliability of morphometric measurements with the Heidelberg retina tomograph, a new instrument which was designed based on this technology, which simplifies handling and is much smaller than the laser tomographic scanner. Methods: Three independent measurements of the optic disc were performed in 39 eyes of 39 patients which were equally divided into the following three groups: glaucoma, glaucoma suspects, and controls. Results: The mean coefficient of variation for measurement in the glaucoma, glaucoma suspect, and control groups was 2.9%, 5.0%, and 3.4%, respectively, for cup area; 4.9%, 4.6%, and 4.6%, respectively, for cup volume; 5.2%, 3.8% and 3.3%, respectively, for mean cup depth; and 5.2%, 4.1 %, and 4.0%, respectively, for maximal cup depth. The mean standard deviation for one pixel of the total image was 30 ± 6 Jim, 28 ± 7 ,um, and 22 ± 6 ,urn for the three groups, respectively. Conclusion: The Heidelberg retina tomograph enables fast and reliable measurement of the optic disc topography and therefore may allow exact follow-up of patients. |
|---|---|
| Item Description: | Elektronische Reproduktion der Druck-Ausgabe 31. Oktober 2013 Gesehen am 08.07.2024 |
| Physical Description: | Online Resource |
| ISSN: | 1549-4713 |
| DOI: | 10.1016/S0161-6420(94)31220-6 |