Back when I had to give angel eye drops every other month or so, that one never worked well for him, but the Neo Poly drops always did. You just have to see what works for your kitty, but, no, I would not be putting in anything that is hurting her & making her scream. I put Lysine in Angel's food every day, & knock on wood, he hasn't needed drops on probably a yr. or more.I always wonder why more vets don't prescribe Idox (Idoxuridine) or more people aren't aware of this.
I can't begin to tell you just how many cat eyes I have managed to save and completely heal with this amazing stuff, eyes that surely would have needed removing otherwise.
Our (my rescue group's) vet supplies us with the Idox drops mainly during kitten season, which is when we most often need it.
If your vet doesn't use this, I would find one who does. It's liquid gold for herpes eyes.
There's also some natural homeopathic eye drops that another member told me about. it's Eye see clearly. The co. is allergicpet.com. It also works pretty good.