Learning To See Double
“Seeing double” is the colloquial term ascribed to a phenomenon in which a particular kind of visual impairment causes the person experiencing it to perceive two images when only one is actually present. The scientific designation for this is, “diplopia.” Films and television programs often portray double vision as the comical result of illegal drug use or excessive drinking. But it is no laughing matter. Persistent or repeated diplopia warrants prompt medical attention to determine the cause(s) of the disorder—not an easy task,…