Brightness adjustment refers to the process of changing the light intensity of a display, such as a computer monitor, television, or smartphone screen. This feature allows users to make the screen brighter for better visibility in well-lit environments or dimmer for comfortable viewing in darker settings. Most devices offer brightness adjustment through settings menus or physical buttons. Users can typically find this option in the display settings of their operating system or through quick access features like control center on smartphones. Proper brightness adjustment can enhance the viewing experience and reduce eye strain.