Portengen, Brendan, Marnix Naber, Demi Jansen, Carlijn van den Boomen, Saskia Imhof, and Giorgio Porro. “Maintaining Fixation by Children in a Virtual Reality Version of Pupil Perimetry”. Journal of Eye Movement Research 15, no. 3 (September 19, 2022). Accessed May 19, 2024. https://bop.unibe.ch/JEMR/article/view/8303.