It's so named for the Dutch eye doctor, Petrus Johannes Waardenburg, who first noticed that people with
differently colored eyes often had a hearing impairment, and defined the syndrome in 1951.
(Image on top: Hella Jongerius, Daylight, 2010, The
colored balls show how the
eyes perceive a
color differently at various times of the day, fimo clay, approximately 4 cm for each ball; Courtesy of SMART Project Space / Photo by Niels Vis.)