Myopia (Ancient Greek: μυωπία, muōpia, from myein “to shut” – ops (gen. opos) “eye”), commonly known as near-sightedness (American English) and short-sightedness (British English), is a condition of the eye where the light that comes in does not directly focus on the retina but in front of it, causing the image that one sees when looking at a distant object to be out of focus, but in focus when looking at a close object.
My myopia was diagnosed at five years young in a 1959 Studebaker, when I said “Dad look at those beautiful sheep” He asked where? “There I say! ” “son those are not sheep those are grey rocks”. If my current minus 8 diopter eyes were functioning in 1800, my job work would be grinding corn within 3 feet of my eyes.
Now with corrective lenses and a Canon Mark 111 I can make perfectly blurry images only when I choose to do so.