The eyes are a window into our deeper health. As the only outward extension of the central nervous system, these sensory organs may reflect not only the state of our brain and blood vessels, but also our very bones. Population studies in Singapore and the UK have now revealed that a person's risk of osteoporosis may be associated with how quickly their eyes are aging. Osteoporosis is a ' silent ' loss of bone mineral density that impacts nearly 20 percent of the world's population. It's