If I remember correctly, it took about a 6-8 weeks. Herbs generally take several weeks to months to show efficacy and this will depend on the animal and condition. So, unfortuantely, the effects are not seen quickly as conventional drugs, but these herbs can resolve issues permanently. Please see the instructions on the packet of Clear Vision on how long to treat. This should be a good guide.
Hope this helps and your kitty’s eyes clear up.
Ayse