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.
A popular alternative to glasses are contacts. These are extremely thin lenses that are placed directly on the eye. The obvious advantage to this is that they are practically invisible on your eye, and once they are on you rarely have to worry about them. But this becomes a double edged sword in that some people forget to take their contacts out and this can cause them to dry out the area on your eye that they cover. This can be remedied with eye drops or repeated blinking, but is sometimes painful and should be avoided. These lenses can be sized to your eye, and vary in shape and thickness, just as glasses do. Contact lenses can be difficult to apply and remove, and can be a pain to find if you drop.
A third, more expensive yet permanent solution is laser eye surgery. Laser eye surgery can repair myopia, hyperopia, and astigmatism, using low power lasers than cut tiny flaps of the cornea. This allows the ophthalmologist operating the laser to reshape the cornea with very fine movements. While the remodeling is happening, the patient will only see white light around a bit of orange light. This may disorient the patient, but is not permanent.