How to watch TV: with the light on or in the dark

Let's face it honestly, most of us spend the vast majority of time in front of the screens of smartphones, computers or TV receivers. This circumstance is not the best way affects the health in general and the health of our eyes in particular. But much of what we know about the harm of television is a delusion or remnants. For example, many, especially grandmothers, still fear the harmful electromagnetic effects of a TV receiver on the body, which can no longer be true.

Indeed, when using old models of kinescopic TVs, there was a significant magnetic field around the device. But the harm from it is not scientifically proven. In modern TVs, cathode ray tubes are no longer used, and, consequently, there can be no significant magnetic fields around in principle.

How to watch TV

How to enjoy your favorite TV programs and not harm your health? The main burden when watching TV falls on the eyes, neck, back and nervous system. To maintain health when viewing, follow these simple rules:

  • Do not place in front of the screen at a distance less than 2.5 meters;
  • when watching sit straight, monitor your posture;
  • if there is no need to create an intimate setting, provide sufficient lighting in the room - this will significantly reduce eye strain;
  • Every 20 minutes, take your eyes off the screen for at least half a minute (at this time, look out the window, look around the room or just close your eyes and relax);
  • do not eat while watching programs, but they will never lose weight by the summer;
  • limit the viewing time to 4 hours per day for adults and 40 minutes for children;
  • Try not to watch TV at least an hour before bedtime and generally give up gadgets at this time - this will significantly improve the quality of sleep.

Is it harmful to watch TV in the dark

Anyone who has watched television at least once in complete darkness will confirm that watching programs in such conditions exerts an increased load on the eyes and the entire body. generally. On this account, many studies were conducted - subjects after viewing in the dark more often complained of eyestrain, fatigue and drowsiness, focusing deteriorated. However, none of these changes is long-term and does not harm health - at least, modern science thinks so.

This is due to the fact that frequent changes in the brightness of a television picture in a dark room cause our eyes to constantly adjust. In the dark, the pupil expands, with light, on the contrary, narrows - given the high dynamism of the television picture, we get a constant change in the size of the pupil, the result - watery red eyes after long watching your favorite movies and TV shows in the dark.

Eye fatigue from viewing in the dark can be significantly reduced by reducing the contrast between the screen and the surroundings: by adjusting the brightness of the television picture or by using the back-lit backlight presented in some modern TVs.

Reference! In my TV receiver, you can turn on a very convenient automatic mode for changing the brightness of the screen depending on the brightness. This mode allows you to get an image of optimal brightness, minimally loading the eyes and in daylight, and in complete darkness. Check the instructions for your device - I'm sure many will find a similar mode, but very few people know about it, because it is not enabled by default.

Eye fatigue after a long viewing of television in the dark is present, but does this lead to a deterioration of vision? Many experts say that after a full sleep it is no longer possible to detect the negative effects on the eyes of nightly gatherings in front of the TV without light.

We wish you to take good care of your vision, avoid long night movie marathon in complete darkness or at least remember to take small breaks in them not only for a snack.

Watch the video: Scary Stories About Light And Dark (March 2024).

Leave Your Comment