When the time rolls around for an eye checkup, many people believe that they don't need to go, because they already know their visual acuity and have the correct prescription glasses or contacts for it. However, this is not the only reason to go to the eye doctor. You may have an eye disease that will cause you to lose your vision, with no symptoms. These types of diseases can only be diagnosed by an eye doctor. Read this article to discover all of the health issues that could be occurring in your eyes without you knowing! It is extremely important for you and your vision to get an annual eye checkup.