Eyesight is one of the most important things you possess. Without it you literally cannot function as a normal human being. If your eyesight is failing, or has failed, there are many ways to improve it. Other, more expensive methods may actually allow you to completely fix your vision. Most methods that can do this are experimental and sometimes dangerous.
The easiest and most widely used method of vision repair is to wear glasses. Glasses are a simple invention of two circular cut pieces of glasses within frames that fit on your face. The pieces of glass have varying thickness to accommodate one eye being weaker or stronger than the other. The frames are usually made of plastic or thin metal rods. The frames can also be styled or colored, depending on the brand and size. Glasses are simple to use and can be removed when not needed. The downsides to glasses are that they can be very fragile and sometimes expensive, as well as the frames that fit you may not be as attractive as others. There are two types of contact lenses, soft and hard. Soft lenses deteriorate quickly and must be changed more often than hard lenses. Hard lenses are more durable as long as you take proper care of them.