First of all, it should be stated that whether the baby is watching TV or watching a projector, if the time is long, it will damage the eyes and is not conducive to the development of the baby's eyesight. However, because the projector enters the eyes after diffuse reflection, which is close to natural light, and the TV is directly reflected into the eyes, the damage to the eyesight of the TV is greater than that of the projector, so it is better for the baby to watch the projector than to watch the TV. Whether it is a TV or a projector, the light that stimulates the eyes for a long time will have a certain impact on the baby's vision. Young children are not recommended to watch TV, projectors or mobile phones. In the case of unavoidable circumstances, the projector is less harmful than the TV.
Babies generally can watch TV for a while after one year old, because the disappointment face develops better after one year old, watching TV at this time will not cause damage to the baby's eyes. But you can't watch it for a long time, and don't watch it for more than ten minutes at a time. In order to protect the baby's eyesight, it is necessary to take the baby to get close to nature when the weather is good, and let the baby's eyes relax through the natural scenery, so as to correct problems such as poor vision after watching TV.
When your baby chooses a projector, you should also pay attention to the pixel, font, and size balance of the projector, and pay attention to whether it is suitable for the baby to watch. If the brightness, resolution and contrast adjustment of the projection equipment are not balanced, and if the words on the projector are adjusted to be small, children who stare at the projector screen for a long time will easily cause visual fatigue and lead to myopia. LCD TV hard screen panels have higher dynamic definition than soft screens, and are more suitable for watching moving pictures.