This title appears in the Scientific Report :
2008
Please use the identifier:
http://dx.doi.org/10.1007/s10853-008-2639-5 in citations.
Modification of Alumina Scale Formation on FeCrAlY Alloys by Minor Additions of Group IVa Elements
Modification of Alumina Scale Formation on FeCrAlY Alloys by Minor Additions of Group IVa Elements
The possible impact of corneal thickness, curvature, and size on the measurement of endothelial cell density (ECD) has largely been ignored in the normal eye. The aim of this study was to investigate the possible impact of the main corneal parameters on the analysis of ECD values at the central, sup...
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Personal Name(s): | Naumenko, D. |
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Kochubey, V. / Niewolak, L. / Dymiati, A. / Mayer, J. / Singheiser, L. / Quadakkers, W. J. | |
Contributing Institute: |
Werkstoffstruktur und Eigenschaften; IEF-2 JARA-ENERGY; JARA-ENERGY |
Published in: | Journal of materials science, 43 (2008) S. 4550 - 4560 |
Imprint: |
Dordrecht [u.a.]
Springer Science + Business Media B.V
2008
|
Physical Description: |
4550 - 4560 |
DOI: |
10.1007/s10853-008-2639-5 |
PubMed ID: |
14977761 |
Document Type: |
Journal Article |
Research Program: |
Rationelle Energieumwandlung |
Series Title: |
Journal of Materials Science
43 |
Subject (ZB): | |
Publikationsportal JuSER |
The possible impact of corneal thickness, curvature, and size on the measurement of endothelial cell density (ECD) has largely been ignored in the normal eye. The aim of this study was to investigate the possible impact of the main corneal parameters on the analysis of ECD values at the central, superior, and temporal parts of the corneal surface.All 75 participants (52 females, 23 males) were assessed as part of a pre-cataract surgery investigation. The mean age was 75.7 (SD 10.9) years. Confocal microscopy was used to measure ECD and the percentage of six sided cells at the central, superior, and temporal parts of the cornea. The Orbscan II topography system was used to measure corneal thickness, topography, and horizontal corneal diameter.The mean central ECD measured was 2488 (SD 301) cells/mm(2), compared with 2525 (SD 505) cells/mm(2) in the temporal cornea and 2639 (SD 398) cells/mm(2) in the superior cornea. The regional differences in ECD were not significant (p>0.14). The central ECD was significantly correlated to the central (mean 0.593 (SD 0.039) mm, p = 0.021) as well as the temporal (0.628 (SD 0.039) mm, p<0.001) and the superior corneal thickness (SD 0.644 (SD 0.048) mm, p = 0.018). The mean corneal curvature at the centre (7.7 (SD 0.34) mm, p = 0.002) as well as 3 and 5 mm from the apex was significantly related to ECD (p = 0.008 and p = 0.009, respectively).The study suggests that in an older population, lower ECD values would be expected in thinner and/or steeper corneas. |