Contact Lenses and Eyeglasses
Contact lenses to be directly float on surface of eyes. Two types of contact lenses are available first one is soft lenses and another is hard lenses. Soft lens is made with help of soft water soluble materials. It automatically takes shape of eye when it wears. Most of the people like to disposable soft contact lenses. It can easily find in the market. You can change these contact lenses daily, fixed period of time or once in a week.
Hard lenses are made of hard gas-permeable plastic. It is used to cover only cornea. These days contact lenses are available in color too. Contact lens is much better than eyeglasses vision disorders means presbyopia and astigmatism, shortsightedness, long-sightedness. It is very difficult to handle eyeglasses; therefore most of the people prefer contact lenses. There are numerous people who like to wear contact lens to look good. Contact lenses are unaffected from temperature and rain too.