ACE2 and infection: The presence of the key entry receptors angiotensin-converting enzyme receptor 2 (ACE2) and transmembrane protease serine subtype 2 (TMPRSS2) in human and murine ocular tissues [29,30,31,32] along with studies showing successful ocular inoculations in several animal models [33,34,35,36] suggest that infection can occur via the conjunctival route.