 This is the Alabama Radio Network. This is Acting State Health Officer Dr. Scott Harris. Almost 3 million people in the United States age 40 and older have glaucoma and nearly half do not know it because there are no early symptoms, noticeable vision loss or pain. By the time symptoms start to appear, this sneak thief of sight, as glaucoma is often referred to, has already started to permanently damage the eye. If left undiagnosed or poorly controlled,