Which test measures tear production over time using a paper strip?

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Multiple Choice

Which test measures tear production over time using a paper strip?

Explanation:
Schirmer test measures tear production over time using a paper strip. A small folded filter paper strip is placed in the lower eyelid and left there for about five minutes; the amount the strip becomes wetted reflects how much aqueous tear is produced during that interval. This helps identify aqueous-deficient dry eye by quantifying tear production. In contrast, tear osmolarity (TearLab), tear film stability (TBUT), and corneal staining with fluorescein (NaFl) assess different aspects of the tear film or ocular surface and do not directly measure tear production over time.

Schirmer test measures tear production over time using a paper strip. A small folded filter paper strip is placed in the lower eyelid and left there for about five minutes; the amount the strip becomes wetted reflects how much aqueous tear is produced during that interval. This helps identify aqueous-deficient dry eye by quantifying tear production. In contrast, tear osmolarity (TearLab), tear film stability (TBUT), and corneal staining with fluorescein (NaFl) assess different aspects of the tear film or ocular surface and do not directly measure tear production over time.

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