Which later wave theory agreed with Pierre de Fermat’s ideas about light traveling through denser media?

The wave theory that agreed with Pierre de Fermat’s ideas regarding light traveling through denser media was the wave theory developed by Christiaan Huygens.12

Fermat’s principle, which posits that light follows the path of minimum time, correctly implied that light travels more slowly in a denser medium. While Isaac Newton’s competing corpuscular theory incorrectly predicted that light speed would increase in a denser medium, Huygens’ construction of wave fronts predicted the opposite—that light velocity is smaller in a denser medium. This prediction was later confirmed by the mid-19th-century experiments of Armand-Hippolyte-Louis Fizeau and Léon Foucault, which ultimately helped establish the wave theory of light over the corpuscular model.312