1.0Glossaryhttps://www.healthbenefitstimes.com/glossaryGlossaryhttps://www.healthbenefitstimes.com/glossary/author/adminglossary/Tear break-up test - Definition of Tear break-up testrich600338<blockquote class="wp-embedded-content" data-secret="4VRgOEA102"><a href="https://www.healthbenefitstimes.com/glossary/tear-break-up-test/">Tear break-up test</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.healthbenefitstimes.com/glossary/tear-break-up-test/embed/#?secret=4VRgOEA102" width="600" height="338" title="“Tear break-up test” — Glossary" data-secret="4VRgOEA102" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script>
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A test for dry eyes in which fluorescein sodium is applied to the cornea. The amount of time it takes for the first dry spots to appear on the cornea is determined. A TBUT time of less than 10 seconds suggests poor tear film stability.