Proper desk lighting prevents eye strain, reduces headaches, and makes you look better on video calls. The key metrics are color temperature and brightness adjustability — a lamp that only offers one setting will be too warm in the morning and too cool at night. Color temperature between 4000-5000K (cool white, similar to daylight) promotes alertness and reduces eye strain for daytime work; warmer temperatures (2700-3000K) are better for evenings. CRI (Color Rendering Index) above 90 means colors look accurate and natural, which matters for any design or creative work. Adjustable arm reach lets you position light where you need it without glare on your screen. For video calls, a lamp positioned in front of you (not behind) dramatically improves how you look on camera. Our picks are evaluated on light quality, adjustability, build quality, and practical desk footprint.