Many Americans are surprised to discover that Medicare does not cover some of the health services they use most often. After decades of paying into the system, retirees often assume routine dental care, eye exams, eyeglasses, hearing tests, and hearing aids will be included once they enroll. Unfortunately, Original Medicare leaves significant gaps in these areas, creating unexpected out-of-pocket costs for millions of seniors. These exclusions can be especially frustrating because dental, vision, and hearing problems often become more common with age. That said, there are some things that can help fill the gaps. Here’s what you need to know.