The weirdest thing happened lately. I have Lady on a diet at the moment so i changed her morning food from Royal Canin to a small bit of canned tuna with diced veg. In the afternoon i replaced her Royal Canin with boiled chicken and rice.

I did this for a week and her tear staining, which is always there all but disappeared. There was still a small bit at the edge of her eyes but nothing like before. She was on this diet a week before i noticed this happening. but i was afraid to keep her on this diet as i thought she may not be getting a balanced diet and all the nutrients she needs.

Has anyone else had this experience with or without Royal Canin?

Does anyone know the reason for this?

Whats the best thing to do next?