In modern times, most of the lenses we interact with are solids, chiefly made from some subtype of glass. Magnifiers, spectacles, and cameras, all of these items use lens in their functions, albeit solid ones. We often forget that the original lenses, the ones residing in our eyes, are primarily composed of liquids. Water is what plays the base for the chemical interactions that take place inside the lens, and these chemical interactions are what allow the lens to change shape and so allow us to perceive our surroundings. The solid components of the lens are what influence its shape, but the liquid components are what truly do the refracting. The beauty of our lenses is their innate versatility that adds another dimension to our ability to interact with the world. They truly are the perfect prisms.