Could be a compound effect - myopia plus this drug - not a good combination.

I have pretty severe myopia, and had laser treatment for tears in it earlier, so have to be very careful about these drugs I guess...

High myopia (between -5 and -6) but IOP was fine...

Well that puts you in a high risk group. Any temporarily high increase in IOP can trigger a tear easily, e.g. an accidental poke. Giving birth is risky with such high myopias. Aging of course... once in 50s I'd do annual checkups on the posterior of the eye if I was a high myope. And drugs for sure didn't affect the shape of your eyeball.

I'm not saying antibiotics don't do any damage, I'm just saying that in such a case those would be at the back of the blame list...