To be honest, my impression was that it was well known that the eyes were a potential infection route and that this didn’t need much other evaluation—as I understand it risk of infection via rubbing the eyes was one of the main reasons that “don’t touch your face” was such prevalent advice early on.
I believe there are studies indicating glasses-wearers have a reduced infection risk (though obviously lots of potential confounds there), that face shields reduce risk if worn with a mask (though some of this may be blocking particles from making direct contact with a mask/filters), etc. but have not done an in-depth evaluation of that topic.
My impression was that eyes were definitely a plausible route, but I find the lack of oculur symptoms a pretty strong argument that it isn’t common for covid in particular, and find the glasses evidence better explained by the fact that fogging glasses are a good feedback loop/incentive to wear your mask properly.
glasses evidence better explained by the fact that fogging glasses are a good feedback loop/incentive to wear your mask properly
This could be an interesting thing to study. Anecdotally, I think I’ve seen more people give ‘fogged glasses’ as a reason/excuse not to wear a mask, or to pull it right down, than as a reason to fit the mask properly. For some people and some mask types, there seems to be an assumption that air escaping out the top is inevitable.