There comes a time in our lives when we realize that our body is not functioning the way it used to when we were younger. Vision is a bodily function that alerts us when something is wrong. Presbyopia is a condition of the eyes that occurs at around the age of 40. It is something that cannot be avoided but it can be corrected to make our lives a little easier. How does someone know if he or she is suffering from Presbyopia and they require reading glasses? What are the signs? When we cannot see things the way that we used to, it is something that we know and something that we try to correct immediately. It is important to know the signs that contribute to the need of reading glasses.