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from the just-need-bigger-books-held-further-away dept.
New research led by scientists at Cardiff University and the University of Bristol found that people who spend more time in education are more likely to develop near-sightedness. Specifically, researchers found that for every year a person spends in education — where they are likely to spend more time reading and typing on computers — there is a rise in myopic refractive error of 0.27 diopters, a diopter being a standard measure of the optical power of a lens. An estimated 68,000 participants were examined using the "Mendelian randomization" (MR), approach which is often used to examine causal effect of a disease in observational studies.
http://www.cardiff.ac.uk/news/view/1199570-study-suggests-education-causes-short-sightedness
https://www.salon.com/2018/06/07/theres-a-scientific-reason-nerds-have-bad-eyesight/
(Score: 1, Interesting) by Anonymous Coward on Saturday June 09 2018, @10:36AM (1 child)
The term is "chromatic aberration", which is caused by different colors of light being bent differently by a lens.
The human eye is supposed to focus perfectly for yellow-green light. There aren't even any "blue" ("S") sensing cells right in the center; that is an illusion provided by the brain.
The focus difference between blue and non-blue is most likely used as part of a slow years-long sort of autofocus, growing the eyeball to the proper shape.
(Score: 2) by maxwell demon on Saturday June 09 2018, @10:49AM
Source?
The Tao of math: The numbers you can count are not the real numbers.