How would someone describe blindness?

Highly variable: Interesting question. Blindness can range from "legally blind", 20/200 or less on the eye chart in both eyes, in which many people cope well for usual activities around the house, even reading print that is not too small with the help of magnifiying devices, to total blindness, not even seeing any light. All "blind" patient have to give up driving. The degree of blindness affects the description.