Contact lenses are a revolutionary device that allows anyone to take off their glasses and achieve 20/20 vision without any surgical procedure. Due to growth in innovation and technology, this small device has become an alternative solution to eyeglasses. Contacts have become a common object in the lives of many but its users never really think about how this device functions and what causes it to function. More importantly, it becomes very important for any manufacturer to produce a lens that is functional and fit for any of their consumer’s needs. There are many lessons of physics behind this microscopic piece of plastic. The world of optics has been impacted for good.