Schirmer's test

  

Test 1 measures 2 thing,

Test 2 measures 1 thing,

Test 3 measures NOSE thing.

A Schirmer's I (without anesthesia): basal and reflex tear secretion

Schirmer's II (with anesthesia): basal tear secretion

Schirmer’s III is with nose irritation

(though some book says different J)