The common name eyebright refers to the plant's long traditional use with eye conditions.
As an ophthalmic, an infusion of the plant can be taken internally or used as an eye wash. Alternatively, the diluted juice can be dropped into the eyes. Some caution should be exercised, experimentally it can induce side effects including dim vision.
1:4 Alcohol Volume 25%. Take 10 - 15 drops 2 x daily.