My wife keeps on telling me, that watching TV while resting on the sofa, lying sideways makes bad eyes. She even teaches our son to always sit upright when watching TV.
I know that TV watching in general is bad for the eyes, but is there an impact if you look at it from a different position? I guess it could impact the balance between two eyes, but assuming you change position (left/right) this wouldn’t be the case. I never heard of this argument in the western world and with around 30 years on sofa TV watching I still have good eyes!
Is does anybody have heard of this and maybe has some sources to read or is this just one of the Taiwanese locally grown assumptions?