ACE2 and infection: The distribution of ACE2 on the ocular surface indicates that SARS-CoV-2 may enter epithelial cells of the ocular surface and replicate there, as demonstrated by Hui and colleagues (57).They performed an ex vivo study using human conjunctival explant cultures, observing that these were more extensively infected by SARS-CoV-2 than by SARS-CoV, with higher infectious viral titers 48 h post infection.