Eyebright is a very common herb used for eye irritations. Eyebright eye washes are often helpful to control symptoms and minor infections and can assist in cleansing and soothing the eye. Felines that have the herpes virus will produce a discharge from the eyes that the eyewash benefits for improvement in an active situation. Nature's Answer Alcohol-Free is my go-to choice for the great quality I can always count on.
My Mom has dry eyes due to auotimmune issues. She has tried various supplement forms of eyebright herb (capsules, other liquids, etc), but she says this is the only one that really shows improvement for her eyes. It's been my experience that Nature's Answer has great products in general, and this one is no exception.