Many herbal remedies and nutritional supplements can damage the eyes, including some alternative therapies that are used by people trying to correct eye problems, new research reports. According to a review of reported cases and medical literature, commonly used supplements including chamomile, ginkgo biloba, licorice, vitamin A and echinacea can cause a myriad of eye problems. Study author Dr. Frederick Fraunfelder explained that supplements become dangerous to the eyes when people take them in large doses. They can cause problems including severe conjunctivitis, eye irritation, retinal bleeding and temporary loss of vision, the study found.
