Water content is a numerical value that indicates how much water is contained in a contact lens. The higher the value, the more water is contained in the contact lens. ■Look at low water content lenses These are lenses with a water content of 50% or less. These lenses are recommended for people who want to reduce the dryness of their eyes and for people with dry eyes or low tear volume. ■Look at high water content lenses This refers to lenses with a water content of 50% or more. They have high oxygen permeability and are soft and comfortable to wear.