Quantifizierung der retinalen Nervenfaserschichtdicke — gemessen mit dem Nerve Fiber Analyzer (NFA) bei gesunden und glaukomkranken Augen

2000 ◽  
Vol 14 (3) ◽  
pp. 146-151
Author(s):  
Maren Klemm ◽  
E. Rumberger ◽  
G. Richard
Keyword(s):  
Nerve Fiber ◽  
Nerve Fiber Analyzer

Glaucoma Detection using the GDx Nerve Fiber Analyzer and the Retinal Thickness Analyzer (RTA)

2006 ◽  
Vol 16 (2) ◽  
pp. 251-258 ◽  
Author(s):  
E.M. Hoffmann ◽  
C. Bowd ◽  
N. Klein ◽  
K. Stemberger ◽  
F.H. Grus ◽  
...  
Keyword(s):  
Nerve Fiber ◽  
Retinal Thickness ◽  
Retinal Thickness Analyzer ◽  
Glaucoma Detection ◽  
Nerve Fiber Analyzer

Reproducibility of Measurements With the Nerve Fiber Analyzer (NFA/GDx)

2000 ◽  
Vol 9 (5) ◽  
pp. 363-370 ◽  
Author(s):  
Thomas P. Colen ◽  
Martha J. H. Tjon-Fo-Sang ◽  
Paul G. H. Mulder ◽  
Hans G. Lemij
Keyword(s):  
Nerve Fiber ◽  
Nerve Fiber Analyzer

Improved Reproducibility of Measurements with the Nerve Fiber Analyzer

1997 ◽  
Vol 6 (4) ◽  
pp. 203???211 ◽  
Author(s):  
Martha J. H. Tjon-Fo-Sang ◽  
Roel van Strik ◽  
Jelle de Vries ◽  
Hans G. Lemij
Keyword(s):  
Nerve Fiber ◽  
Nerve Fiber Analyzer

Retinal Nerve Fiber Layer Measured by Heidelberg Retina Tomograph and Nerve Fiber Analyzer

2005 ◽  
Vol 15 (2) ◽  
pp. 246-254 ◽  
Author(s):  
M. Iester ◽  
A. Mermoud
Keyword(s):  
Nerve Fiber ◽  
Retinal Nerve Fiber Layer ◽  
Heidelberg Retina Tomograph ◽  
Fiber Layer ◽  
Nerve Fiber Layer ◽  
Nerve Fiber Layer Thickness ◽  
Rnfl Thickness ◽  
Nerve Fiber Analyzer ◽  
The Difference ◽  
Retinal Nerve Fiber

Purpose To compare retinal nerve fiber layer (RNFL) thickness measured by Heidelberg retina tomograph (HRT) and nerve fiber analyzer (GDx). Methods Twenty eyes of 20 consecutive healthy subjects were recruited for this study. Each subject had a normal visual field and a normal optic nerve head, which was assessed by slit-lamp biomicroscopy using a 90° lens. Using the HRT and GDx, RNFL measurement was calculated as for software vs 2.01 and vs 1.0.14, respectively. Retinal nerve fiber layer thickness was evaluated for the entire annulus surface every 5° degrees. RNFL was assessed by HRT and GDx. HRT RNFL measurement was calculated at 0 üm from the edge, while GDx RNFL measurement at 1.75 disc diameter as for software. The difference between the highest points and the deepest points was calculated and compared. Furthermore, because of the possibility of different scales in the two systems, the following ratio was calculated: superior/inferior, superior/temporal, superior/nasal, inferior/temporal, and inferior/nasal. Results When the entire RNFL thickness was considered, a significant (p<0.001) difference was found between the HRT and GDx measurements. A difference of 200 üm was found between the highest and the deepest HRT points while a difference of 40 üm was found between the highest and the deepest GDx points. Conclusions HRT and GDx RNFL measurements were statistically different in each sector. However, ratio parameters showed no difference between the obtained values except for superior/temporal ratio and inferior/temporal ratio.

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