[carmen in nj]

I use Calm Eyes, I don't know if they sell it in Canada you can email the company that makes it thru their contack link. All I know is that so far is working great for my dogs. and the active ingredient is called EYEBRIGHT..herb.
I googled it when i was looking for it and got this..
"Eyebright herb is used to support healthy eye function. Eyebright (Euphrasia Officinalis) has been used for generations as the favorite choice of treatment for various eye diseases; cataracts, conjunctivitis, diabetic retinopathy, eye inflammations, eye infections, eye strain, glaucoma and vision problems."