Center for Vision Research, SUNY Eye Institute, Upstate Medical University 1 article published in JoVE Neuroscience A Simple Behavioral Assay for Testing Visual Function in Xenopus laevis Andrea S. Viczian1, Michael E. Zuber1 1Ophthalmology Department, Center for Vision Research, SUNY Eye Institute, Upstate Medical University Xenopus laevis tadpoles prefer swimming on the white side of a black/white tank. This behavior is guided by their vision. Based on this behavior, we present a simple assay to test the visual function of tadpoles.