Results
Respiratory droplet is particle with diameter greater than 5µm, while aerosol are ≤5µm according to the World Health Organisation. However, infection is not neatly separated into the dichotomy of droplet versus airborne transmission route.
Modelling and simulation have shown the importance of the conjunctival mucosa as a route of transmission of disease in blood splashes, droplets and aerosols containing virus. The limited reports from SARS, COVID-19 and influenza season supports its use. However, HCW do not routinely use face shield if they consider the procedures to be unlikely to be associated with potential contamination. They also erroneously believe that prescription glasses is adequate protection. The issues associated with eye shield use, may be less of a problem with face shield.