Traditional herbal texts recommend a compress made with 1 tablespoon (15 grams) of the dried herb combined with 2 cups (500 ml) of water and boiled for ten minutes.⁵ The undiluted liquid is used as a compress after cooling. The German Commission E monograph does not support this application, due to possible impurities in non-pharmaceutical preparations.⁶ Consult with a physician knowledgeable in the use of herbs before applying eyebright to the eyes.

Internally, two to three cups per day of eyebright tea is sometimes recommended. Dried herb, 1/2–3/4 teaspoon (2–4 grams) three times per day, may also be taken. The tincture is typically taken in 1/2–1 1/4 teaspoons (2–6 ml) three times per day.