Contact lens discomfort (CLD) is a substantial problem experienced frequently by contact lens wearers and it is the primary factor associated with permanent discontinuation of lens wear. Studies report that between 43% and 72% of contact lens wearer's dropout due to discomfort. Reducing the number of contact lens (CL) patient dropouts has been a continuing challenge for eye care professionals. With more than 125 million contact lens wearers around the world, patient discontinuations can have a considerable economic impact on an eye care practice.