A Deeper Look Into the Wonderful World of Sight
Seeing the world through rose-colored glasses is a great thing for your happiness, but it would wreak havoc on your vision after a while. In reality, glasses are typically used to correct poor vision caused by misshapen eye anatomy or to protect your eyes from ultraviolet light. Other than that glasses are rarely given a second though. When you find out you have poor vision, you go get a pair of glasses customized to your particular malady. But do you ever stop to wonder what goes into that pair of glasses and how they work to correct your vision?
Even understanding how vision works means having to understand the physics of geometric optics as well as the anatomy and physiology of the human eye and brain. Light waves travel into the cornea and is focused by the lens, finally hitting at the back of the eye where it is interpreted by the optic nerve. But for some people this process is hindered, necessitating corrective lenses to compensate for anatomy. Whether you are nearsighted, farsighted, or have astigmatism, most vision problems can be adequately corrected with glasses. Knowing glasses have been around for hundreds of years makes the process all the more impressive. Learn more about how glasses work from this infographic!