tear break-up time

**Tear Break-Up Time**

Tear Break-Up Time (TBUT) is a clinical measure used to assess the stability and quality of the tear film on the surface of the eye. It indicates the time interval between a blink and the formation of dry spots on the cornea, reflecting the eye’s ability to maintain proper lubrication. A shorter TBUT can be a sign of dry eye syndrome or other ocular surface disorders. Understanding and measuring tear break-up time is essential for diagnosing and managing various eye health conditions to ensure comfort and clear vision.