Schirmer Tear Test
The Schirmer Tear Test (STT) is used to measure the rate of tear production in animals. It can be used to diagnose tear deficiency as a contributing factor to ocular (eye) surface diseases, such as Keratoconjunctivitis sicca (KCS), pigmentary keratitis, indolent corneal ulcers, exposure keratitis, and more. It can also be used to assess lacrimal gland function before cataract surgery. Each standardized sterile strip has a color bar tear front indicator and a millimeter scale (up to 35 mm). One package of Schirmer Tear Test contains 5 sets of two strips (one for the left eye and one for the right eye).