Non-Invasive Break-Up Time (NIBUT)
Non-Invasive Break-Up Time (NIBUT) is an advanced diagnostic test available at Desai Eye Hospital to assess tear film stability without touching the eye. This test is crucial for diagnosing dry eye syndrome and meibomian gland dysfunction (MGD) by measuring how long the tear film remains intact before breaking up. Unlike traditional Break-Up Time (TBUT) tests that use dyes, NIBUT provides a more comfortable and precise assessment of tear quality.
During the procedure, a specialized corneal topographer or interferometer projects light patterns onto the eye. The patient blinks naturally while the device records how long it takes for dry spots to appear on the tear film. A shorter break-up time indicates tear film instability, which can cause discomfort, irritation, and blurry vision.
The test is quick, painless, and requires no dyes or direct contact. At Desai Eye Hospital, our specialists use NIBUT to detect early signs of dry eye disease and customize treatment plans for long-term eye comfort.
How Does It Work?
- Measures the stability of the tear film over the eye surface.
- Uses light-based imaging without dyes or eye contact.
- Patient blinks normally while advanced imaging captures tear changes.
- Shorter break-up time suggests tear film instability and dry eye.
- More comfortable and accurate than traditional TBUT tests.
- Quick and completely non-invasive, taking only a few minutes.
- Helps diagnose dry eye syndrome and meibomian gland dysfunction.
- Supports proactive eye care by detecting tear film issues early.

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