Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2023 May 5;13:7328. doi: 10.1038/s41598-023-34466-4

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© The Author(s) 2023

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

PMC Copyright notice

Representative case showing the effect of pterygium on corneal higher-order aberrations. (A) Right eye with pterygium. (B) Normal left eye. Compared with the normal fellow eye, pterygium induced significant with-the-rule astigmatism. Moreover, the right eye showed much higher values of oblique trefoil and oblique quatrefoil and much lower values of horizontal coma, horizontal trefoil and horizontal quatrefoil than the normal left eye after enantiomorphism correction of the left eye. Vertical coma and spherical aberrations were not much different between the eyes.