Background: Contact lenses are ocular prosthetic devices that are wore by > 150 million people worldwide. Contact lenses are wore to correct refractive errors, provide a better appearance, and reduce activity limitation. CDC reports the number of contact lens wearers in the United States in 2015, there were 41 million contact lens wearers aged ≥ 18 years. About 34.6% of contact lens wearers i…