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Article History

Received: 22 March 2023

Revised: 12 April 2023

Accepted: 15 April 2023

First Online: 27 April 2023

Declarations

:

: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research committee of the University of Auckland and of the University of Cologne and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Informed consent was obtained from all individual participants included in the study.

: M. T. is the owner of the Trester-Institute for Ocular Prosthetics and Artificial Eyes. All other authors certify that they have no affiliations with or involvement in any organization or entity with any financial interest (such as honoraria; educational grants; participation in speakers’ bureaus; membership, employment, consultancies, stock ownership, or other equity interest; and expert testimony or patent-licensing arrangements), or non-financial interest (such as personal or professional relationships, affiliations, knowledge, or beliefs) in the subject matter or materials discussed in the manuscript. All authors have full control of all primary data.