> afraid of radiation and moving to LCDs there was on brand of missproduced (I think TVs) which did actually had radiation issues ;=) through the whole bad ey

> afraid of radiation and moving to LCDs there was on brand of missproduced (I think TVs) which did actually had radiation issues ;=) through the whole bad eyesight from sitting to close to a TV things was basically nonsense they main issue which can cause strain and long term eyesight issues is from blinking to little and in turn getting to dry eyes which could lead to microscopic damage which can accumulate over the years AFIK This is probably why your method works => you close the eye and force production of some tears . Through eyeballs are sensitive and anything involving "spots appear in the vision" tends to be a bad idea, so I would personally refrain from doing so. Just "strongly" closing the eyes without involving your hands tend to be good enough for facilitating some tear production.