These types of contact lenses are made for bi-weekly use and after that are supposed to be thrown away. Bi-weekly contacts are among the most prescribed contact lenses around. Acuvue Oasys, by Johnson & Johnson, is the most popular brand among users. The other three available are Acuvue 2 - in boxes of 6 lenses , Acuvue 2 value pack - in boxes of 12 lenses and Acuvue advance in boxes containing 6 lenses. You can enjoy discount between 13% - 21% on all these four Acuvue prescription contact lenses and contact solutions on lenskart.com, the site for best contact lenses at the most competitive prices.