Repeatability and correlation of corneal biomechanical measurements obtained by Corvis ST in orthokeratology patients

Lü, Wei; Ding, Wenzhi; Ji, Rongyuan; Tian, Yuyin; Zhao, Chenpei; Li, Honglei; Jiao, Mengjun; Guo, Zhen; Leng, Lin

doi:10.1016/j.clae.2022.101793

Cited by 4 publications

(1 citation statement)

References 32 publications

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“…Long-term use may also cause corneal warpage or remodeling, leading to increased corneal surface asymmetry and irregularity. On the other hand, scleral lenses, due to their large size and rigid design, can potentially cause hypoxia and physiological changes in the cornea and underlying tissues [ 62 , 63 ]. The lens-cornea clearance, along with lens fitting and wearing time, may induce stress and potential changes to the corneal structure.…”

Section: Factors Leading To Alterations Of Biomechanical Propertiesmentioning

confidence: 99%

Corneal biomechanics and diagnostics: a review

Komninou,

Seiler,

Enzmann

2024

Int Ophthalmol

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Purpose Corneal biomechanics is an emerging field and the interest into physical and biological interrelations in the anterior part of the eye has significantly increased during the past years. There are many factors that determine corneal biomechanics such as hormonal fluctuations, hydration and environmental factors. Other factors that can affect the corneas are the age, the intraocular pressure and the central corneal thickness. The purpose of this review is to evaluate the factors affecting corneal biomechanics and the recent advancements in non-destructive, in vivo measurement techniques for early detection and improved management of corneal diseases. Methods Until recently, corneal biomechanics could not be directly assessed in humans and were instead inferred from geometrical cornea analysis and ex vivo biomechanical testing. The current research has made strides in studying and creating non-destructive and contactless techniques to measure the biomechanical properties of the cornea in vivo. Results Research has indicated that altered corneal biomechanics contribute to diseases such as keratoconus and glaucoma. The identification of pathological corneas through the new measurement techniques is imperative for preventing postoperative complications. Conclusions Identification of pathological corneas is crucial for the prevention of postoperative complications. Therefore, a better understanding of corneal biomechanics will lead to earlier diagnosis of ectatic disorders, improve current refractive surgeries and allow for a better postoperative treatment.

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Section: Factors Leading To Alterations Of Biomechanical Propertiesmentioning

confidence: 99%

Corneal biomechanics and diagnostics: a review

Komninou,

Seiler,

Enzmann

2024

Int Ophthalmol

View full text Add to dashboard Cite

show abstract

Assessment of dynamic corneal response parameters in Chinese patients of different ages with myopia and orthokeratology lenses using the Corvis ST

Zhang,

Liu,

Gao

et al. 2024

Contact Lens and Anterior Eye

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Analysis of potential impact factors of corneal biomechanics in myopia

Zhang

et al. 2023

BMC Ophthalmol

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Purpose To investigate potential impact factors associated with corneal biomechanical properties in Chinese myopia and further to investigate quantifying corneal biomechanics in clinical work. Methods Three hundred fifty-five eyes from 181 healthy myopic subjects with a mean age of 25.1 ± 9.4 were recruited in this study. Each patient carried out a comprehensive ophthalmic examination, including corneal hysteresis(CH), corneal resistance factor(CRF), central corneal thickness(CCT), axial length(AL), intraocular pressure(IOP), spherical equivalence(SE) and corneal curvature (K). CH and CRF were measured with the ocular response analyzer(ORA). To analyze the corneal biomechanical characteristics of myopia patients and their association with other parameters. Result The multiple linear regression analysis showed that CH was positively associated with CCT, and corneal curvature (all with P < 0.05) and negatively associated with SE and AL)(all with P < 0.05); CRF was positively correlated with CCT, corneal curvature and IOP(all with P < 0.05), but negatively correlated with SE and AL(all with P < 0.05). The CH and CRF values in children group were both higher than adults group (≥ 18 years old) (P < 0.05), but it attributed to that the CCT of children was thicker than adults. Excluding factor of CCT, there was no significant difference in CH and CRF between children group and adult group. Excluding factor of CCT, there was no significant difference in CH and CRF among different stage of age (age 18–48). Conclusion The CCT played the most important role of affecting the CH and CRF. The SE, corneal curvature, AL and IOP had a certain influence on corneal biomechanics. Whether the CH and CRF values of individual patient are normal in clinical work, it should refer to the CH and CRF values corresponding CCT sectional range and SE.

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Repeatability and correlation of corneal biomechanical measurements obtained by Corvis ST in orthokeratology patients

Cited by 4 publications

References 32 publications

Corneal biomechanics and diagnostics: a review

Corneal biomechanics and diagnostics: a review

Assessment of dynamic corneal response parameters in Chinese patients of different ages with myopia and orthokeratology lenses using the Corvis ST

Analysis of potential impact factors of corneal biomechanics in myopia

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Repeatability and correlation of corneal biomechanical measurements obtained by Corvis ST in orthokeratology patients

Cited by 4 publications

References 32 publications

Corneal biomechanics and diagnostics: a review﻿

Corneal biomechanics and diagnostics: a review﻿

Assessment of dynamic corneal response parameters in Chinese patients of different ages with myopia and orthokeratology lenses using the Corvis ST

Analysis of potential impact factors of corneal biomechanics in myopia

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Product

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Corneal biomechanics and diagnostics: a review

Corneal biomechanics and diagnostics: a review