Chinese doctors first noticed that fewer of their covid-19...

Chinese doctors first noticed that fewer of their covid-19 patients wore glasses than is found in the general population:
https://jamanetwork.com/journals/jamaophthalmology/fullarticle/2770872

Since then there's been quite a few studies suggesting coronavirus transmission can occur through the eyes, even if it's not the major source of transmission. One example of the evidence:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7198092/

Our federal AHPCC currently recommends all healthcare workers, as part of their PPE, to wear a faceshield, goggles or safety glasses.
https://www.health.gov.au/news/health-alerts/novel-coronavirus-2019-ncov-health-alert/coronavirus-covid-19-advice-for-the-health-and-disability-sector/personal-protective-equipment-ppe-for-the-health-workforce-during-covid-19

Eye protection is not recommended for everyone, because it's a lower incidence of transmission via the eye, that's why only high risk workers require protective eyewear. But if I worked in a high risk environment and had eye drops that I knew killed the virus, I'd definitely be buying it and using it.