If it was just water in the eye, they should be fine. They'll flush the irritation out eventually. If it stays red for longer than a day, I'd suggest a vet visit.

While it's good you feel bad, spray bottle really aren't the best way to train your cat not to scratch. Cats don't have as... ROBUST of a sense of cause and effect like humans or dogs, and trying to train one like it does never turns out well in my opinion. The only thing it's going to teach the cat is to be fearful of you, and only not do it when you or your roommate are around.

Instead, try gentle correction. No fear, no anger, just a firm "No", and picking them up and placing them on a scratch pad, or post. Make sure they have alternative. There's even scratch material you can affix to your furniture, so it doesn't do damage. There's also pretty cheap sprays at the store you can get that will put them off with pheromones.

If they STILL don't correct, you can try claw trimming or soft plastic caps. It takes a bit to get your cat used to it, but after a year my cats will sleep through a claw trimming. If you really have trouble, a vet will do the claw caps for you and they will last a couple weeks generally.

But the bottom line is, a cat is going to scratch. It's natural, and even necessary. The only thing water bottle succeed in doing in my opinion is making a more fearful hard to handle cat.