Weekly lenses are lenses that you wear for 1-2 weeks and then replace with a new pair. Depending on the lens you've been prescribed, you can either wear them continuously or have to remove, clean and disinfect the lenses overnight. Certain monthly lenses can be worn continuously and are then prescribed as a weekly lens. It is important that the contact lenses are cared for according to the instructions stated in the prescription received during the eye examination. LensOn offers a wide range of weekly lenses at affordable prices.