- Measures reflex tear secretion
- Measures basal tear secretion
- Should be used with at least 4 drops of topical anesthetic
- Should be performed before drying the cul-de-sac
Correct Answer: Measures basal tear secretion
The Schirmer I test measures reflex tear secretion and is performed without topical anesthetic. One drop of topical anesthetic should be sufficient for this test and the cul-de-sac should be blotted dry before measurement to prevent false measurements.