I make an eyebright tea from ground eyebright to use as an eyewash for my dogs cataracts. Can the tea be stored in the fridge safely for any amount of time when using it this way?
Yes. I like to make large batches of tea, too, it’s just easier. Most herbal teas can be refrigerated for up to 5 days. In your case, you might want to consider making herbal ice cubes. Just let the tea cool, strain and then put the tea in an ice cube tray and place in the freezer. Once frozen, just put in a plastic bag or cover it so that it stays clean. Uses as needed.
Finally, here is an eye wash that I like to use for for tired, itchy or inflamed eyes:
External Eye Wash Tea
Equal parts of:
greater celandine (Chelidonium majus)
elder flower (Sambucas nigra)
eyebright (Euphrasia officinalis)
plantain (Plantago major, lanceolata)
Bring water to boil and add herbs; turn off heat and let steep for 20 minutes with cover on. Strain thoroughly. Can put in the refrigerator to make it cold or fill ice cube trays and freeze. If liquid, dip a clean cloth in tea and place over one or both eyes, as needed.