Tear Test Strips, specifically those of the Schirmer type, are diagnostic tools commonly used in ophthalmology to measure tear production. Here's more information about Tear Test Strips of the Schirmer type: Purpose: Tear Test Strips (Schirmer) are primarily used to assess the quantity of tears produced by the lacrimal glands. This test helps diagnose conditions such as dry eye syndrome, also known as keratoconjunctivitis sicca, by evaluating tear production levels. Design: Schirmer Tear Test Strips are thin, paper-like strips that are usually marked with millimeter (mm) gradations. The strips are typically designed to be inserted into the lower eyelid's conjunctival sac, where they absorb tears over a specified period. Packaging: Tear Test Strips (Schirmer) are commonly packaged in individual packets or vials to maintain sterility and prevent contamination. A pack of 100 Tear Test Strips would contain 100 individual strips, each sealed in its own packet. Usage: To perform the Schirmer Tear Test, a single strip is inserted into the lower eyelid's conjunctival sac, usually at the outer corner of the eye. The patient is instructed to keep their eyes closed during the test, which typically lasts for a few minutes. After the specified time, the strips are removed and the amount of tear wetting is measured using the mm gradations on the strip. Interpretation: The length of tear wetting on the Tear Test Strip (Schirmer) provides an indication of the quantity of tears produced by the lacrimal glands. Reduced tear wetting may indicate decreased tear production, which can be indicative of dry eye syndrome or other ocular surface disorders. Variations: There are variations of the Schirmer Tear Test, including the Schirmer I test (without anesthesia) and the Schirmer II test (with anesthesia). The Schirmer I test measures basal tear secretion, while the Schirmer II test evaluates reflex tear secretion after instillation of anesthetic eye drops. Safety and Precautions: Tear Test Strips (Schirmer) should be handled and disposed of according to standard precautions for ocular diagnostic procedures. Care should be taken to avoid contamination and ensure accurate test results.