Contact lenses are corrective lenses that are made to fit the cornea of the eye. They are made of a breathable and firm material and make it possible for people to see clearly. In order to purchase contact lenses, you must see your optometrist or ophthalmologist beforehand. He or she will give you an eye exam and see which strength of contact lenses you will need. Once you have your prescription, you are free to purchase your contacts from local contact lenses retail stores. Buying your contact lenses from different chains helps you save on price, not quality. Traditionally, people purchase their contact lenses from their eye doctor, which also means that they pay quite a bit more for their lenses. Now one of the most popular places to purchase contact lenses is online. Purchasing contact lenses online is fast, easy and effective. You can place your order with a number of online companies and receive instant savings. Best of all, buying your contact lenses online means that they will be delivered to you, without having to drive back to the eye doctor to pick them up. There is no right online company to purchase from; you will have to do your research to locate the company that fits your needs. Keep in mind that online retailers sell name brand contacts, such as the popular Acuvue 2 contact lenses. They also sell custom contact lenses, including colored contacts and those that fit prosthetic eyes. You do not have to buy contacts online to find cheap contact lenses. They can also be purchased at large retail chains that sell a variety of goods at competitive prices. These retail stores often times offer bundle packages where you can purchase a year's supply of contacts for a lower price.