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My name is***** and I am sorry to hear that your kitty is having eye problems tonight. Your vet should have lubricated her eyes prior to surgery, but sometimes after surgery they will have reduced tear production from the pain medications given. I would recommend using a cotton ball soaked in cool water to clean her eyes and see if that helps. If her eyes become watery again, you can try applying human over-the-counter eye lubricating drops.
If they are still dry and goopy in the morning, I would recommend calling your vet to see if they want to see her or send home any medicated eye cream.
Does this help? What other questions do you have?
How are your kitty's eyes this evening? Are they still goopy? What treatments did you try?