Post B32DIITATcV7gGPyzI by ryan@bemrose.social
 (DIR) More posts by ryan@bemrose.social
 (DIR) Post #B31iYZu6KJPZo5IcRU by TechLibre@noauthority.social
       2026-02-05T23:32:44Z
       
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 (DIR) Post #B31neNe9JMkFIeQLxo by SirSpeedBump@noauthority.social
       2026-02-06T00:40:23Z
       
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       @TechLibreFunny but TV up close is worse. Why I still have to use corrective lenses even when wearing Oculus Is about eye muscle focusNear sighted and reading sci-fi books in the dark under the covers for hours didn't help.
       
 (DIR) Post #B31otHvMy7a7qn9Qlk by mhjohnson@noauthority.social
       2026-02-06T00:54:17Z
       
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       @SirSpeedBump @TechLibre Yeah - the optics of a head mounted display are pretty complicated. There are tricks to make the image to appear at "infinity" or some relatively distant point.There are also issues with latency - from the motion of the head to the time the display shows the new image. Many years ago the best we could get out of a high end visual system was two frames (30hz)  and a field (60hz). Even that was enough to cause nausea in some people.
       
 (DIR) Post #B32C1boPCzTMnFpYDQ by nanook@friendica.eskimo.com
       2026-02-06T05:13:19Z
       
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       @TechLibre Truth was it wasn't your eyes that were the issue, it was that you were getting X-rayed because at it's heart a CRT is an X-ray tube.  Modern goggles by contrast, aren't producing X-rays.
       
 (DIR) Post #B32DIITATcV7gGPyzI by ryan@bemrose.social
       2026-02-06T05:27:41.895534Z
       
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       @nanook @TechLibre It's also your eyes.Focusing close for hours on end is not good for the eyes.  We are built to focus in the distance.  The warning sign is eye fatigue and headache, which incentivizes you to take breaks.Screen time causes the same close-up eyestrain, but it is tricking the brain into thinking you're looking at something far away, so you don't get the warning signs.  Staring into screens of any type, for hours and hours every day, has damaged the long-term eyesight of entire generations of modern humans.
       
 (DIR) Post #B32DSlisZHh1IvlC52 by nanook@friendica.eskimo.com
       2026-02-06T05:29:27Z
       
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       @ryan @TechLibre You do the same when you read a book, even more so than a television, but nobody criticized you for reading too much.
       
 (DIR) Post #B32DbvSBl5q05eJsvI by ryan@bemrose.social
       2026-02-06T05:31:16.843113Z
       
       0 likes, 0 repeats
       
       @nanook @TechLibre My body signals me to take frequent breaks when I'm reading a book (as I said).  Because unlike a glowing screen that produces the illusion of depth, my brain knows it's up-close work.
       
 (DIR) Post #B32E2wpqjJ1IC5Gvqq by nanook@friendica.eskimo.com
       2026-02-06T05:35:43Z
       
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       @ryan @TechLibre By the time you are old your lens will lose it's accommodation anyway and you will be fixed focus, the only question is where the default focal plane will be.  Will you need glasses to drive (my case) or to read (perhaps yours), not will  you need glasses.