Japanese people use mask even before pandemic, like many other Asian countries.
Mask is the key, do not forget that point. The rest measures are secondary.
Yes, the virus can enter to eyes, but CANNOT spread from eyes. Key point, do not forget this.
If a lot of people use mask dairy like an habit in public places, streets, supermarkets, etc. Except where is not possible. It does lowers the spread and, another key point, the VIRUS LOAD.
Key points:
-Mask
-In, but not out from eyes
-Virus load
So, if you get this virus in the disco, Saturday night, but stop receiving more copies of it, the rest of the week, in work, street, supermarket, maybe you don't get disease, and if you get disease, it would be easier for you inmunne system to beat it.