According to the Glaucoma Research Foundation, an estimated three million Americans suffer from the eye condition and half of them are unaware of their issue. It is the leading cause of blindness in the United States, and 10% of people with the condition experience loss of vision - even when they get the proper treatment.In the U.S. alone, glaucoma accounts for up to 12% of all cases of blindness. It is especially prevalent in African-Americans, who...