What is the role of the Schirmer test in the evaluation of Sjögren syndrome?

Updated: Mar 05, 2021
  • Author: Sriya K Ranatunga, MD, MPH; Chief Editor: Herbert S Diamond, MD  more...
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Answer

In the Schirmer test, a bent piece of Whatman number 41 filter paper is placed in the lower conjunctiva, and the amount of tearing on the filter paper is recorded. Normal wetting is greater than 15 mm after 5 minutes, whereas a definitive positive result is less than 5 mm after 5 minutes. This test can help to exclude or confirm significant dryness of the eyes, but it is not disease-specific. Furthermore, false-positive results occur. An evaluation of the diagnostic performance of the Schirmer test yielded a sensitivity of 42% and a specificity of 76% for Sjögren syndrome. (See the image below.) [52]

Photograph that demonstrates the Schirmer test, wh Photograph that demonstrates the Schirmer test, which is used to detect deficient tear production in patients with Sjögren syndrome. The filter paper strip is placed at the junction of the eyelid margins. After 5 minutes, 15 mm of paper should be moistened if tear production is normal, as shown here. Persons older than 40 years may moisten between 10 mm and 15 mm. Patients with Sjögren syndrome have less moistening. Sjögren syndrome is most common in patients with rheumatoid arthritis but may also occur without associated disease and in systemic lupus erythematosus, polyarteritis, systemic sclerosis, lymphoma, and sarcoidosis.

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