Gertjan Scheir graduated as a Master of Science in Physics and Astronomy at the university of Ghent (UGent) and received his PhD at the Faculty of Industrial Engineering at the university of Leuven (KULeuven). In his PhD, Gertjan focussed on visual comfort of interior lighting. The currently used Unified Glare Rating (UGR) was investigated and improved resulting in a contribution of Gertjan to a CIE Technical Report. Next, a new physiological model of the human eye, a.o. based on the receptive field mechanism and the pupillary light reflex, was develloped and tested. Gertjan currently works as a Credit Risk Model Validator and Data Officer at the vdk bank in Ghent. In his spare time, Gertjan plays music.