If someone suffers from "myopia", what can they not do well?

The term for this common vision issue has a fascinating origin rooted in a simple physical act. The word "myopia" comes from the Greek "myops," which literally means "shut-eye." This is a direct reference to the tendency of people with the condition to squint, or partially shut their eyes, in an effort to make out faraway signs, faces, or landscapes. Squinting slightly changes the shape of the eye's lens and limits peripheral light rays, which can momentarily sharpen a blurry image.

This difficulty with distance vision occurs because of the eye's physical shape. In a myopic eye, either the eyeball itself is slightly too long from front to back, or the cornea has too much curvature. As a result, when light from a distant object enters the eye, it comes to a focus point just in front of the retina, instead of directly on it. By the time the light image actually reaches the retina—the light-sensitive tissue at the back of the eye—it has started to spread out again, creating a fuzzy, out-of-focus picture.

Because nearby objects can still be seen clearly, the condition is more commonly known as nearsightedness or shortsightedness. Corrective lenses, like those in glasses or contacts, work by bending the incoming light differently, ensuring it lands perfectly on the retina and brings the distant world back into sharp focus.