Screen Sightedness

Eye sight problems (in this case myopia or short-sightedness) are so rampant since the days of computers made worse by smartphones and tablets that British eye surgeon David Allamby had given this phenomenon a name called “screen sightedness”:

Mr. Allamby also believes the problem could increase by 50% during the next decade, with the problem having become so common that he has given it a name: “screen sightedness.” Allamby contends that smartphone use, combined with with time spent using computers and watching television, is putting children and young people at risk of permanently damaging their eyesight, with excessive screen watching at close proximity keeping the genes that control myopia active sometimes long beyond the age that short-sighted sets would normally have stabilized (approximately age 21), in some instances even into the 40s. He predicts that 50% of 30-year-olds could have the problem by 2033.

And…

The Protect Your Eyesight Website explains that the human eye is not meant to spend hours focusing on objects at close range, and is in a naturally relaxed state when looking at something at further distances, approximately 7 feet and beyond. Additionally, research has shown that long hours spent on a computer or reading can lead to permanent damage caused by this “near-point stress.”

Besides that, this technologytell article also introduced to me the existence of trifocal glasses, something not quite commonly known:

A “do-all” solution is trifocal glasses with three lens planes, combining an upper segment for distance vision, a lower/bottom one for close work, and a third one for mid-range or screen distance in between. The downside of this is limited continuity of vision and peripheral distortion greater than with bifocals or single vision lenses. A trifocal variant is occupational “readables” with a relatively larger center zone for mid-range computer distance and proportionately smaller lower and upper zones for reading/close work and focusing at about 10 feet for “room-type vision” respectively. However, “readables” are not intended for driving and such because they don’t support true distance focus.

via technologytell.