Break up time (BUT) test is done in_______________?
Correct answer: D. Sjogren's syndrome
- A. Myasthenia gravis
- B. Multiple sclerosis
- C. SLE
- D. Sjogren's syndrome
Explanation
The break-up time test measures tear-film instability and is useful in detecting the keratoconjunctivitis sicca of Sjögren syndrome. The other listed neurological and autoimmune diseases are not the standard indication for this test.
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