title: Tribute to L. Henk Van der Tweel.
authors.affiliation: Department of Visual System Analysis, Academic Medical Center, Amsterdam-Zuidoost, The Netherlands.
authors.forename: H
authors.initials: H
authors.lastname: Spekreijse
mesh_terms: D049673:History, 20th Century; D009426:Netherlands; D009885:Ophthalmology / Q000266:history*; D010825:Physics / Q000266:history*