TrueTear by Allergan
TrueTear is an FDA-approved device that uses neurostimulation controlled by the user to produce natural tears. This device is used by placing the tips into the nose and pressing a button. The stimulation will send small waves of energy as signals to the lacrimal gland to produce tears. This a drop-free and drug-free option, but can be used in combination with other therapies if deemed necessary by your optometrist.