Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/74577
PIRA download icon_1.1View/Download Full Text
Title: In vivo measurement of regional corneal tangent modulus
Authors: Hon, Y 
Chen, GZ
Lu, SH
Lam, DCC
Lam, AKC 
Issue Date: 2017
Source: Scientific reports, 2017, v. 7, no. 1, 14974, p. 2
Abstract: Currently available clinical devices are unable to measure corneal biomechanics other than at the central region. Corneal stiffness (S), thickness, and radius of curvature was measured at the central cornea (primary fixation) and 3 mm from the temporal limbus (primary and nasal fixations). The corneal tangent modulus (E) of 25 healthy subjects was calculated from these data. After confirming normality, repeated measures analysis of variance (RMANOVA) revealed significant difference in S (F(2, 48) = 21.36, p < 0.001) at different corneal regions and direction of fixations. E also varied significantly at different corneal regions and direction of fixations (RMANOVA: F(2, 48) = 23.06, p < 0.001). A higher S and a lower E were observed at the temporal region compared with the corneal centre. Nasal fixation further increased S and E values compared with primary fixation. Due to the specific arrangement of corneal collagen fibrils, heterogeneity of corneal biomechanical properties is expected. In future clinical practice, localized corneal biomechanical alternation and measurement might assist corneal disease detection and post-surgery management. In addition, practitioners should be aware of the fixation effect on corneal biomechanical measurement.
Publisher: Nature Publishing Group
Journal: Scientific reports 
ISSN: 2045-2322
EISSN: 2045-2322
DOI: 10.1038/s41598-017-14750-w
Rights: Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
© The Author(s) 2017
Appears in Collections:Journal/Magazine Article

Files in This Item:
File Description SizeFormat 
s41598-017-14750-w.pdf1.22 MBAdobe PDFView/Open
Open Access Information
Status open access
File Version Version of Record
Access
View full-text via PolyU eLinks SFX Query
Show full item record

Page views

63
Last Week
1
Last month
Citations as of Jul 3, 2022

Downloads

12
Citations as of Jul 3, 2022

SCOPUSTM   
Citations

8
Last Week
0
Last month
Citations as of Jul 7, 2022

WEB OF SCIENCETM
Citations

5
Last Week
0
Last month
Citations as of Jul 7, 2022

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.