Just saw you are in Canada. I know you have different rules about what is over the counter or prescription. If the polysporin is all you can get, I'd try that. If you can get terramycin I would use that (it's tetracycline), or even something like this:
https://www.vetrxdirect.com/product...-LIyiUzrRR-CX1FyQsXe-mV7T3m6_SuRoCSiEQAvD_BwE
Veterycin makes an eye wash and and antimicrobial eye gel that might be helpful in flushing the eyes, hoping you may be able to get that there.
I don't know if you can have it shipped to you. I'm not very knowledgeable about what is available in Canada, sorry.
You could try looking for some Canadian members and try messaging them for advice on what is available there.