Next Article in Journal
Effects of Maternal Prenatal Multi-Micronutrient Supplementation on Growth and Development until 3 Years of Age
Next Article in Special Issue
Numerical Simulation of Corneal Fibril Reorientation in Response to External Loading
Previous Article in Journal
Unnatural Death among Treatment Seeking Substance Users in Singapore: A Retrospective Study
Article

Corneal Buckling during Applanation and Its Effect on the Air Pressure Curve in Ocular Response Analyzer

Department of Optics and Photonics, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
*
Author to whom correspondence should be addressed.
Int. J. Environ. Res. Public Health 2019, 16(15), 2742; https://0-doi-org.brum.beds.ac.uk/10.3390/ijerph16152742
Received: 31 May 2019 / Revised: 29 July 2019 / Accepted: 29 July 2019 / Published: 31 July 2019
(This article belongs to the Special Issue Ocular Biomechanics)
The paper presents, for the first time, corneal buckling, during the air puff applanation, recorded with use of Ocular Response Analyzer (ORA), when the cornea is deeper deformed after its applanation. Precise numerical analysis of the air pressure curve from the raw data, distinct local disturbances of the curve, which appear almost exactly at the time of the first and the second applanations. Thirty measurements taken on six eyes show clear dependencies between times of both applanations and appearances of local wave disturbances on the air pressure curve as well as between the amplitude of pressure wave disturbances and the respective height of applanation curve. These findings can be interpreted as a result of very fast corneal buckling, that produces the air pressure wave, propagating from the cornea towards the device. The quantitative dependencies measured and described in this study, enable to characterize the individual buckling during respective applanations. Due to these individual characterizations and dependencies it is possible to understand and describe better the ultrafast corneal applanation process. Such phenomena could likely be employed to increase the accuracy of measured parameters by ORA or for identifying new types of biomechanical properties of the cornea. View Full-Text
Keywords: corneal buckling; Ocular Response Analyzer; air pressure curve corneal buckling; Ocular Response Analyzer; air pressure curve
Show Figures

Figure 1

MDPI and ACS Style

Jóźwik, A.; Kasprzak, H.; Kozakiewicz, A. Corneal Buckling during Applanation and Its Effect on the Air Pressure Curve in Ocular Response Analyzer. Int. J. Environ. Res. Public Health 2019, 16, 2742. https://0-doi-org.brum.beds.ac.uk/10.3390/ijerph16152742

AMA Style

Jóźwik A, Kasprzak H, Kozakiewicz A. Corneal Buckling during Applanation and Its Effect on the Air Pressure Curve in Ocular Response Analyzer. International Journal of Environmental Research and Public Health. 2019; 16(15):2742. https://0-doi-org.brum.beds.ac.uk/10.3390/ijerph16152742

Chicago/Turabian Style

Jóźwik, Agnieszka, Henryk Kasprzak, and Agata Kozakiewicz. 2019. "Corneal Buckling during Applanation and Its Effect on the Air Pressure Curve in Ocular Response Analyzer" International Journal of Environmental Research and Public Health 16, no. 15: 2742. https://0-doi-org.brum.beds.ac.uk/10.3390/ijerph16152742

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop