More than 3.4 million people over the age of 40 in America are visually impaired, or completely blind, according to the Centers for Disease Control. Our eyes are extremely complex organs, and are unsurprisingly also very fragile. The majority of the population requires some form of visual correction, like eye glasses, in order to see clearly. However, astigmatism, myopia, and hyperopia are only a small segment of eye issues that might be revealed from an eye exam with your ophthalmologist. In order to ensure that your eyes stay healthy, and your vision is as clear as it can be as you go through life, it is important to know what eye conditions you might encounter.