To examine mouse vision, we conducted a looming test. Mice were placed in a large square arena with a monitor on its ceiling. The looming visual stimulus consistently evoked freezing or flight reactions in the mice.
Koehler, C. C., Hall, L. M., Hellmer, C. B., Ichinose, T. Using Looming Visual Stimuli to Evaluate Mouse Vision. J. Vis. Exp. (148), e59766, doi:10.3791/59766 (2019).