Corneal Biomechanical Properties from Two-Dimensional Corneal Flap Extensiometry: Application to UV-Riboflavin Cross-Linking

2012 ◽  
Vol 53 (8) ◽  
pp. 5010 ◽  
Author(s):  
Sabine Kling ◽  
Harilaos Ginis ◽  
Susana Marcos
Keyword(s):  
Biomechanical Properties ◽  
Cross Linking ◽  
Two Dimensional ◽  
Corneal Biomechanical Properties

scholarly journals Spatial characterization of corneal biomechanical properties with optical coherence elastography after UV cross-linking

2014 ◽  
Vol 5 (5) ◽  
pp. 1419 ◽  
Author(s):  
Michael D. Twa ◽  
Jiasong Li ◽  
Srilatha Vantipalli ◽  
Manmohan Singh ◽  
Salavat Aglyamov ◽  
...  
Keyword(s):  
Biomechanical Properties ◽  
Cross Linking ◽  
Optical Coherence ◽  
Spatial Characterization ◽  
Corneal Biomechanical Properties

Prospective one year study of corneal biomechanical changes following high intensity, accelerated cornea cross-linking in patients with keratoconus using a non-contact tonometer

2021 ◽  
pp. 112067212110697
Author(s):  
Mohammed Ziaei ◽  
Jinny J Yoon ◽  
Hans R Vellara ◽  
Akilesh Gokul ◽  
Jay J Meyer ◽  
...  
Keyword(s):  
High Intensity ◽  
High Speed ◽  
Biomechanical Properties ◽  
High Irradiance ◽  
Cross Linking ◽  
Continuous Exposure ◽  
Tertiary Referral Center ◽  
Significant Difference ◽  
Prospective Longitudinal ◽  
Corneal Biomechanical Properties

Purpose To characterize corneal biomechanical properties utilizing a dynamic ultra-high-speed Scheimpflug camera equipped with a non-contact tonometer (CorVis ST, CST) in keratoconic corneas following continuous high intensity, high irradiance corneal cross-linking. Design Prospective longitudinal single-centre study at a tertiary referral center. Methods Corneal biomechanical properties were measured in patients with progressive keratoconus undergoing high intensity (30 mW/cm2), high irradiance (5.4 J/cm2), accelerated corneal cross-linking with continuous exposure to ultraviolet-A for 4 min. CST was used to assess corneal biomechanical properties pre-operatively and at 1, 3, 6 and 12 months post-operatively. CST output videos were further analyzed using several previously reported algorithms. Results A total of 25 eyes of 25 participants were examined. The mean age of participants was 20.9 ± 5.3 years; 56% were male and 80% were of Māori or Pacific Island origin. Energy absorbed area (mN mm), was the only significantly changed parameter compared to baseline at all time points measuring 3.61 ± 1.19 preoperatively, 2.81 ± 1.15 at 1 month ( p = 0.037), 2.79 ± 0.81 ( p = 0.033) at 3 months, 2.76 ± 0.95 ( p = 0.028) at 6 months and 2.71 ± 1.18 ( p = 0.016) at 12 months. Conclusions The significant difference between the pre and post-operative energy absorbed area appears to reflect changes in corneal viscous properties that occur following corneal cross-linking.

scholarly journals Corneal Biomechanical Properties at Different Corneal Cross-Linking (CXL) Irradiances

2014 ◽  
Vol 55 (5) ◽  
pp. 2881 ◽  
Author(s):  
Arthur Hammer ◽  
Olivier Richoz ◽  
Samuel Arba Mosquera ◽  
David Tabibian ◽  
Florence Hoogewoud ◽  
...  
Keyword(s):  
Biomechanical Properties ◽  
Cross Linking ◽  
Corneal Biomechanical Properties

scholarly journals Assessment of the changes in corneal biomechanical properties after collagen cross-linking in patients with keratoconus

2019 ◽  
Vol 31 (3) ◽  
pp. 262-267 ◽  
Author(s):  
Ramin Salouti ◽  
Mohammad Reza Khalili ◽  
Mohammad Zamani ◽  
Maryam Ghoreyshi ◽  
M. Hossein Nowroozzadeh
Keyword(s):  
Biomechanical Properties ◽  
Cross Linking ◽  
Corneal Biomechanical Properties ◽  
Collagen Cross Linking

Dynamic OCT measurements of corneal biomechanical properties after UV cross-linking in the rabbit

2013 ◽  
Author(s):  
Michael D. Twa ◽  
Jiasong Li ◽  
Ravi K. Manapuram ◽  
Floredes M. Menodiado ◽  
Manmohan Singh ◽  
...  
Keyword(s):  
Biomechanical Properties ◽  
Cross Linking ◽  
Corneal Biomechanical Properties

Changes in Corneal Biomechanical Properties With Different Corneal Cross-linking Irradiances

2018 ◽  
Vol 34 (1) ◽  
pp. 51-58 ◽  
Author(s):  
FangJun Bao ◽  
YaRu Zheng ◽  
Chang Liu ◽  
XiaoBo Zheng ◽  
YiPing Zhao ◽  
...  
Keyword(s):  
Biomechanical Properties ◽  
Cross Linking ◽  
Corneal Biomechanical Properties

Long-term Evaluation of Corneal Biomechanical Properties After Corneal Cross-linking for Keratoconus: A 4-Year Longitudinal Study

2018 ◽  
Vol 34 (12) ◽  
pp. 849-856 ◽  
Author(s):  
Mohammad-Reza Sedaghat ◽  
Hamed Momeni-Moghaddam ◽  
Renato Ambrósio ◽  
Cynthia J. Roberts ◽  
Abbas-Ali Yekta ◽  
...  
Keyword(s):  
Longitudinal Study ◽  
Biomechanical Properties ◽  
Cross Linking ◽  
Term Evaluation ◽  
Corneal Biomechanical Properties

scholarly journals Cross-linking for the Management of Pellucid Marginal Degeneration in a Case of an Unsuccessful Implantation of Intracorneal Ring Segments

2012 ◽  
Vol 1 (2) ◽  
pp. 120-124 ◽  
Author(s):  
Bader Tarek Tuffaha ◽  
David P Piñero
Keyword(s):  
Visual Acuity ◽  
Biomechanical Properties ◽  
Cross Linking ◽  
Corneal Surface ◽  
Corrected Visual Acuity ◽  
One Year ◽  
Corneal Biomechanical Properties

ABSTRACT We present a case of progressive pellucid marginal degeneration (PMD) treated with cross-linking (CXL) after a previous unsuccessful implantation of intracorneal ring segments. One year after surgery, an increase in the corneal biomechanical properties accompanied by an improvement in corrected visual acuity and a decrease in the magnitude of corneal coma-like aberrations was observed. However, the magnitude of the refractive cylinder and keratometry increased whereas the internal astigmatism was reduced by 3.93 D. CXL in a cornea with a progressive PMD seems to induce not only changes in the anterior corneal surface, but also in the posterior corneal surface. How to cite this article Tuffaha BT, Alio JL, Piñero DP. Cross- linking for the Management of Pellucid Marginal Degeneration in a Case of an Unsuccessful Implantation of Intracorneal Ring Segments. Int J Kerat Ect Cor Dis 2012;1(2):120-124.

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