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. 2021 Jul 8;8:705829. doi: 10.3389/fmed.2021.705829

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Copyright © 2021 Cheng, Zhao, Jiang, Kong and Sun.

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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Measurement and regionalized of the retinal nerve fiber layer thickness (RNFLT) were demonstrated. A circular scan with a 3.4 mm diameter centered on the optic nerve head was performed through undilated pupils with the Spectralis OCT + HRA system. The average parapapillary RNFLT(G) and the average RNFLTs in the T (315°-45°), TS (45°-90°), and TI (270°-315°) sectors were obtained with the Spectralis viewing software (Heidelberg Eye Explorer, version 1.0.10.0).