Fig. 1

Relationship between watering eyes and the tear volume in the “watering eyes” and “no watering eyes” groups. A five-point scale ranging from level 0–4 is indicated: level 0, none; level 1, infrequently; level 2, occasionally; level 3, almost always; and level 4, always. *P < 0.05; **P < 0.01. The box line, the median value; the upper and lower ends of the box, the third and the first quartile; and the upper and lower ends of the beard, the maximum and minimum values. The median (range) tear volumes (for both eyes) before treatment were 10 μL (3–35 μL) and 17.5 μL (5–35 μL) in the “watering eyes” and “no watering eyes” groups, respectively