Studies show that around 50% of contact lens wearers give up wearing lenses within the first year because they have been fitted with lenses that are uncomfortable or give poor vision. In a recent study of previously failed wearers we successfully refitted more than 70%. There are many different disposable lenses available on the market, which are manufactured using different processes. With different materials giving varying degrees of biocompatibility, water content, wettability, oxygen permeability etc. Even the number of curves of the lens varies from one type to another. At 20/20 We treat every patient individually and we will trial a number of lenses with you until we find your perfect lens.