Video S1. Demodex mites clustering on an eyelash. This video was taken through a light microscope (YS100, Nikon, Japan) (original magnification: 200×) with a smartphone after fluorescent staining.
Video S2. Demodex mite walking on an eyelash at a rate of 0.25 mm in 40 s (22.5 mm/h). This video was taken through a light microscope (YS100, Nikon, Japan) (original magnification: 200×) with a smartphone.