https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7882915/ Agree that health care workers are at the greater risk (as would be expected due to their close vicinity to people) but "According to a review of 172 studies analyzing data collected from 16 countries, if healthcare workers and executives wore eye shields, there is a significant protection against being infected by this virus and other respiratory pathogens. Moreover, wearing eye protection may make the transmission of COVID-19 about three times less likely, according to the study". So, personal choice but unarguably another layer of protection.