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. 2016 Jul 29;6:30844. doi: 10.1038/srep30844

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Copyright © 2016, The Author(s)

This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

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(a) Huygens PSF simulation by Zemax of our gonioscopy system integrated with axicon lens unit. (b) Huygens PSF simulation by Zemax of the gonioscopy system without axicon lens unit. (Here we have performed separate PSF simulation each for point sources at origin and after 3 μm shift in Y axis).