What is the optimal distance between the sofa and the TV

Many young parents like to sit on the sofa with their babies to watch TV, because babies who are active by nature will always be attracted by TV programs involuntarily and become quiet suddenly, while parents can do what they like on the side. But moms and dads, perhaps this behavior is silently hurting your baby. After work, I turn on the TV. So what is the best distance between the sofa and the TV? Let’s take a look together below!

1. LCD TV, distance = screen size × 60~80;

2. Plasma screen TV, distance = screen size × 70~90.

3. For CRT TV, distance = screen size × 80~100; the larger the screen size, the larger the multiplier should be. For example: for a 29-inch LCD TV, the screen size is 74 cm, and the distance from the sofa to the TV should be 4.5 to 7 meters. For a 21-inch CRT TV, the screen size is 53 cm, and the distance from the sofa to the TV should be 4. to 5.5 meters.

4. People usually watch TV programs in a darker environment, which consumes more rhodopsin. Rhodopsin is synthesized from vitamin A, which actually consumes a certain amount of vitamin A. If you do not regularly supplement enough vitamin A, the vitamin A content in your blood will decrease or become insufficient, which will inevitably affect the photochemical reaction of photoreceptor cells and prevent the synthesis of sufficient rhodopsin. Since rhodopsin recovers more slowly after being affected by dim light, the dark adaptation time is prolonged. In severe cases, it can cause night blindness, which will affect life, work and study.

5. People who often watch TV should supplement foods rich in vitamin A in time, such as carrots, spinach, shepherd's purse, leeks, oranges, animal liver, eggs, milk, etc., and take cod liver oil when necessary to ensure that there is a sufficient amount of vitamin A involved in the synthesis of rhodopsin.

The above introduces a lot about the best distance between various TVs and sofas, because watching TV frequently can cause great harm to the eyes, especially for younger children. If the distance between the sofa and the TV is too close, it will hurt the eyes even more, so the optimal distance is still better!