UGR (Unified Glare Rating) is a scale that measures how much glare a light fixture causes, rated roughly from 10 to 30 — where lower is better. UGR below 19 is the accepted standard for spaces with screens or focused work, and below 16 is considered excellent. A high-UGR light is the one that makes you squint, tires your eyes, and reflects off your monitor. It's why a beautifully designed room can still feel uncomfortable to sit in.




