How do you protect yourself when you get sick through your eyes first?

I started to notice a pattern when it's a viral infection, my eyes will get watery and red for a few days and turn back to normal, then a few days later im sick. That's actually happened 1st when I had covid and my doctor just said i had allergies because I showed no other problems 5 days later Boom! Then it happened again the 2nd time I had covid, and when I had flu and even last month and here it is again. Im messed up if I don't wear a mask or do. Right now my eye is pink, watery, and itchy and I just took a pic. It's different sizes, so this ain't even the battle yet but it's either coming soon or actually allergies...
How do you protect yourself when you get sick through your eyes first?
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