3D TVs are televisions that create the illusion of depth, allowing viewers to experience images as if they are three-dimensional. They achieve this effect by displaying two slightly different images simultaneously, one for each eye. Special glasses are often required to see the 3D effect properly. These TVs can enhance the viewing experience for movies, video games, and sports, making them more immersive. However, the popularity of 3D technology has declined in recent years, as many consumers prefer standard high-definition displays and find 3D glasses inconvenient.