Why is using computer and TV screens in dark rooms bad for eyes?
user
Good question!  There are several potential eye health issues that are related to spending a lot of time looking at computer and TV screens in dark surroundings.  One major issue is increased risk of development of myopia or nearsightedness, which is an abnormal elongation of the eyeball that primarily causes difficulty seeing distant objects clearly.  Studies suggest that the increased use of computers since the 1990’s has caused a major surge in the incidence of myopia around the world, and that this is likely due to the fact that myopia is most commonly developed in children who spend a lot of time looking at close-up objects, which is precisely the case for many computer and TV users.  Another concern is that the glare and bright light from computer and TV screens can damage the retinal cells in the eye, leading to a condition called “digital eye strain”.  Many users of computer and TV screens are also prone to developing dry eye and irritation due to the fact that staring at the screens for extended durations of time depletes the tears in the eyes which keep the eye moist.  All of these issues can generally be alleviated by getting better lighting and increasing breaks away from the screen, but can be particularly exacerbated in dark environments.  Finally, excessive screen time
assistant
Why is using computer and TV screens in dark rooms bad for eyes?
user
Good question!  There are several potential eye health issues that are related to spending a lot of time looking at computer and TV screens in dark surroundings.  One major issue is increased risk of development of myopia or nearsightedness, which is an abnormal elongation of the eyeball that primarily causes difficulty seeing distant objects clearly.  Studies suggest that the increased use of computers since the 1990’s has caused a major surge in the incidence of myopia around the world, and that this is likely due to the fact that myopia is most commonly developed in children who spend a lot of time looking at close-up objects, which is precisely the case for many computer and TV users.  Another concern is that the glare and bright light from computer and TV screens can damage the retinal cells in the eye, leading to a condition called “digital eye strain”.  Many users of computer and TV screens are also prone to developing dry eye and irritation due to the fact that staring at the screens for extended durations of time depletes the tears in the eyes which keep the eye moist.  All of these issues can generally be alleviated by getting better lighting and increasing breaks away from the screen, but can be particularly exacerbated in dark environments.  Finally, excessive screen time
assistant
Why is using computer and TV screens in dark rooms bad for eyes?