answer:An eye is an eye, I would not think it would be an issue. But…I’d research more, ask for a second opinion. Most animal pharmaceuticals are derived from human based products. Visine and Clear eyes are NOT allergy eye drops. I would think they would be non-effective other than to soothe the eye a bit. Don’t forget that manufacturers are not going to condone using their products on animals due to regulatory issues, but, this does not mean they can’t be used. If your vet said it was okay I wouldn’t be too concerned.