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. 2021 Nov 17;9:771763. doi: 10.3389/fbioe.2021.771763

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Copyright © 2021 Zhang, Zhang, Tian, Zheng, Fu, Zhai and Li.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Vertical displacements of the anterior surface of the cornea at each position and test time point (A), spatial distribution (B), and temporal variation (C). t ₀, t _A1, t _HC, t _A2, and t _end represent the time at initial state, first applanation, highest concavity, second applanation, and end state, respectively; $r_{l}$ represents the distance from the corneal apex which was l (l = 0, 1, 2, 3, 3.5) mm.