I don't have Pterygium (yet), but talking about computer screens ...
Years ago I got calcific tendonitis (frozen shoulder) in my right shoulder from decades of pushing a mouse ( I was a software developer working at the pixel level). The shoulder froze solid, and was incredibly painful. I had a big hydrocortisone injection directly into the shoulder. After months of painful physio got full use back again. So switched to using a track ball.
Then a few years later, after even longer looking at computer screens my eyes deteriorated to the point that I became very short sighted. So I had laser eye surgery (LASIK) in 2001 (by coincidence, on the same day as 9/11) and got my unaided distance vision back (now 20/16) which I still have because I had special glasses for computer work, and now don't look at computer screens very much. Only the tiny screens on the 'new' PCs aka mobile phones and tablets ...