Our eyes serve an important function by allowing us to retrieve information about objects, persons, and other elements in our environment, thereby enabling us to remember them better when drawing information from our memory. But there are several defects associated with human eye.

Myopia and hypermetropia are two most common defects of eye. Myopia is the inability to see distant objects clearly; hypermetropia is the inability to see nearby objects distinctly. Fortunately this eye defects and disorders can be corrected by wearing eyewear and contact lenses prescribed by an ophthalmologist. If you don’t have a regular ophthalmologist or optometrist, ask friends for suggestions, then choose a practitioner who is a member of the American Optometric Association.

Once you have prescription, you can go to eyeglasses store in your area or at online store. Prescription lenses are made of glass or plastic. Glass Lens made from glass; it is twice as heavy as a normal plastic lens. Prices of prescription eyeglasses are vary from store to store, so it is a wise decision to shop around to get the best price.