Contact lenses are a discreet way of improving vision without being tied to a pair of glasses. Many individuals choose contacts over eyeglasses because they are convenient, comfortable, and capable of correcting vision without affecting appearance. There are two classifications of contacts – soft and hard. Soft lenses are the most popular and are most commonly used to treat people with age-related vision loss, astigmatism, nearsightedness, or farsightedness. They form to the shape of the eye and tend to stay in place for the duration of wear. Hard lenses, on the other hand, can also be used to treat most vision impairments, but are less versatile and more likely to move out of place. Those who choose hard lenses typically do so in favor of the crisper and clearer vision they achieve with them.