Gurm Definitely have "forward head posture"
Same here. I've been diagnosed with bad posture since age 6 or 7.
About a year before my screen issue started in 2012-13, I had pinched nerve in my lower back for the first time (gym deadlifts injury), issues out of nowhere reoccurs every 2-3y. I've mentioned this to few optometrists and they said lower back nerves should not have anything to do with the eyes.
PS I do not have neck nor shoulder pain tho.
AGI my symptoms resemble the ones of people who underwent concussions
I came up to the same conclusion after watching this video
I have tried green glasses (many other tints too) tho, no improvements.