Used to treat eye-related conditions, particularly those involving irritation, redness, or inflammation. it is effective for symptoms such as watery, burning eyes, often associated with conjunctivitis, hay fever, or allergies. this remedy is also used to relieve excessive tearing, especially when triggered by exposure to bright light or wind. additionally, euphrasia officinalis may help with colds, sinus congestion, and upper respiratory issues, where there is a watery discharge and a sensation of discomfort in the eyes and nose.