Lubricant Eye Drops with N-Acetylcarnosine for dogs. These eye drops are based on the original Can-C™ formula. Directions: use one or two drops, twice a day or as directed by medical health professionals. Indications: As a soothing eyedrops, for temporary relief of minor irritation to eye and exposure to sun and wind. Personal experience : it prevents my dogs eye cataract from getting worse. Ask me for more in depth details. I have been selling this in my country and received many good reviews