Scanning electron micrographs of bacterial accumulation on the CL surface. (A) A clear surface of a control CL with the correct care routine, such as hand washing with soap before applying and taking out the CL, not exceeding the recommended wearing period, and dropping-rubbing-rinsing the surface with CL care solution. (B,C) Markedly contaminated CL surface of a subject with unfavorable behaviours, at scale bars of 10 μm and 1 μm, respectively.