"If you have a small desk, you probably don't want your desk lamp taking up most of your desk," says Jack Risser, an associate and lighting expert at Lam Partners. As such, Dr. Tsai recommends choosing "a desk lamp with warm white or neutral white LED light, around 2700K to 3000K. ✔️ Color Rendering Index (CRI): "CRI helps determine the amount of blue light emitted from that particular bulb or light and will not stress the eyes' photoreceptors," says Dr. Grossman.