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Walk the Even Hospital Database by book and chapter — the raw source passages that ground Ask, DDx, and the rest.

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©2013 UpToDate ® Print Email Basal secretion test (A) Topical anesthesia is placed in each eye. Whatman 41 filter strips are placed in the temporal inferior cul-de-sac. (B) The filter strip absorbs the tears as they are produced. Adapted with permission from: Paysse EA, Coats DK, Cassidy M. Refinements Volume III/Number 2. San Francisco: American Academy of Opthalmology, 1999.