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Comparison of Corneal Biomechanical Properties between Post-LASIK Ectasia and Primary Keratoconus
Joint Authors
Shen, Yang
Zhou, Xingtao
Zhao, Wuxiao
Jian, Weijun
Shang, Jianmin
Aruma, Aruma
Jhanji, Vishal
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-10-26
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
Purpose.
To compare the corneal biomechanical properties between post-LASIK ectasia and primary keratoconus.
Methods.
A total of 42 eyes of 42 patients with matching age and central corneal thickness (CCT) were divided into two groups according to diagnosis of post-LASIK ectasia (PLE group; n = 21; age range: 22–47 years) and primary keratoconus (KC group; n = 21; age range: 21–47 years).
The corneal biomechanical properties were assessed using Scheimpflug-based technology (Corvis ST; Oculus Optikgeräte, Wetzlar, Germany).
The paired t-test and linear regression analysis were performed.
Results.
The PLE group had significantly higher mean stiffness parameter at the first applanation (SP-A1; 76.65 ± 21.66 vs 52.72 ± 13.65, p≤0.001) and mean stress-strain index (SSI) (SSI: 0.78 ± 0.16 versus 0.64 ± 0.12, p=0.001) than the KC group.
SP-A1 was positively correlated with CCT in the PLE group (Pearson’s r = 0.816, p≤0.001), but not in the KC group (Pearson’s r = −0.014, p=0.952).
No statistical correlation was observed between SSI and CCT in either group (Pearson’s r = 0.292, p=0.199, and Pearson’s r = 0.004, p=0.985, respectively).
Conclusions.
In our case series, KC manifested more severe than PLE in biomechanical properties.
Since SSI measurements were independent of corneal thickness, it can be used for corneal biomechanical assessment.
American Psychological Association (APA)
Zhao, Wuxiao& Shen, Yang& Jian, Weijun& Shang, Jianmin& Jhanji, Vishal& Aruma, Aruma…[et al.]. 2020. Comparison of Corneal Biomechanical Properties between Post-LASIK Ectasia and Primary Keratoconus. Journal of Ophthalmology،Vol. 2020, no. 2020, pp.1-8.
https://search.emarefa.net/detail/BIM-1189469
Modern Language Association (MLA)
Zhao, Wuxiao…[et al.]. Comparison of Corneal Biomechanical Properties between Post-LASIK Ectasia and Primary Keratoconus. Journal of Ophthalmology No. 2020 (2020), pp.1-8.
https://search.emarefa.net/detail/BIM-1189469
American Medical Association (AMA)
Zhao, Wuxiao& Shen, Yang& Jian, Weijun& Shang, Jianmin& Jhanji, Vishal& Aruma, Aruma…[et al.]. Comparison of Corneal Biomechanical Properties between Post-LASIK Ectasia and Primary Keratoconus. Journal of Ophthalmology. 2020. Vol. 2020, no. 2020, pp.1-8.
https://search.emarefa.net/detail/BIM-1189469
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1189469