Work well, but sting
The drops worked well and reduced the pressure in my cat's eye. The vet was concerned her eye would need to be removed, but after a few weeks of diligent treatment 3x/day, she's doing much better. Her eye looks better, (less cloudy and no irritation or squinting) and she feels better, too. They do sting for a few seconds after using them (I know this because once I accidentally used her drops in my own e1, instead of my allergy drops). They also have a very bitter taste (I know because I gave her a kiss after I dosed her, and some got on my lip). They can leave the fur around the eye crusty so you should wipe the excess off with a tissue after dosing. She tends to shake her head afterwards, so the excess would land all over her fur, which she'd try to lick off, and it was not pleasant. Once I figured this out, she's not as reluctant to take the medication. Other than that, I'm very happy with the meds, and thankful they saved her eye. Bonus, the price on this site is great, compared to the $56 I spent for the same thing at CVS.