[joebob42]

What is the device for? Genuine ignorance and curiosity. Are there folks who cannot produce tears, and do the tears serve an important health function that makes it important to stimulate tears in this way?

[RockRobotRock]

https://en.wikipedia.org/wiki/Dry_eye_syndrome

https://en.wikipedia.org/wiki/Schirmer's_test - this test is used in the clinical trials for the device to determine if your eyes produce enough tears