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. 2023 May 8;12(4):1939–1956. doi: 10.1007/s40123-023-00717-w

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© The Author(s) 2023

Open AccessThis article is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License, which permits any non-commercial 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-nc/4.0/.

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Fig. 1 — Conceptual model of keratoconus and its treatment impact on patients’ lives. The conceptual model was developed and interpreted by the analyst using Wilson and Cleary’s model. The thickness of the arrows symbolizes the intensity of the relationship between the themes as reported by the analyst. As our aim was to develop a quality-of-life questionnaire, we did not explore in depth the detailed evaluation and interpretation between the detailed concepts but only between the general concepts