Many kinds of guidelines have been developed, and useful information about risk factors and preventive measures are recommended to the public by various means [4]. It is found that the COVID-19 can be transmitted through droplets, contact, aerosol, etc. [5]. A person will not be infected if he washes his hands before touching the conjunctiva. Accordingly, measures such as washing hands, wearing masks and goggles are very effective to prevent potential infections. Further, Wuhan has implemented closed management of communities. Inhabitants are not allowed to go out of their communities and they are very supportive to this regulation.