One medical staff member became infected despite wearing 13 protective equipment and an N95 mask; the initial manifestation was 14 unilateral conjunctivitis, which was followed by fever a few hours later. 7 
Many studies have noted the importance of wearing goggles to protect the 16 eyes from coronavirus infection when in contact with patients. 8-11 Through 17 interviews with medical staff at our hospital in Wuhan, China, we learnt 18 that fogging of goggles was a problem when caring for COVID-19 patients. 19 Fogging impairs vision, thus hindering work efficiency when nurses collect 20 blood, for example. This may lead to failure to collect blood properly, or 