Science

Are glasses / contact lenses beneficial to society? At first a simple question, yes they improve vision to those visually impaired but a deeper look may find that this may not be the case. Let’s first look at how glasses / contact lenses work, you have two types of lenses, a concave lens and a convex lens.  “A concave lens curves inward. That means it is thinner in the middle than at the edges. When light passes through a concave lens, the light rays bend so that they spread apart. Concave lenses make objects look smaller than they really are. A convex lens curves outward. It is thicker in the middle than at the edges. When light passes through a convex lens, the light rays bend toward each other. The rays meet at a single point on the other side of the lens. Convex lenses magnify objects, or make them look larger.” (“Lens”) So how could lenses be damaging to society? Well they are damaging to the environment but how you might ask, if your glasses break, what are you going to do wi...