To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 6 lGMR>GCaMP6m/+ pupal retina at approximately P12 stage (Fig. 5). Calcium waves facilitate and coordinate the contraction of endfeet actin stress fibers in Drosophila interommatidial cells Donald F. Ready, and Henry C. Chang Development 2021. 148:None-None; doi: 10.1242/dev.199700 Download Original Video