Dry eye is a condition in which a person doesn’t have enough quality tears to lubricate and nourish the eye. Tears are necessary for maintaining the health of the front surface of the eye and for providing clear vision. Dry eye is a common and often chronic problem, particularly in older adults.
With each blink of the eyelids, tears spread across the front surface of the eye, known as the cornea. Tears provide lubrication, reduce the risk of eye infection, wash away foreign matter in the eye, and keep the surface of the eyes smooth and clear. Excess tears in the eyes flow into small drainage ducts in the inner corners of the eyelids, which drain into the back of the nose. Dry eyes can occur when tear production and drainage is not in balance. People with dry eyes either do not produce enough tears or their tears are of a poor quality:- American Optometric Association (AOA)

The TOP THREE things to try when your eyes feel dry!

Eyes feeling dry? Well, welcome to Colorado! 🙂 Unfortunately, when the heater is on more at home and in the car this time of year, symptoms can worsen. I recommend trying these 3 things:
1) WATER. Be sure you are drinking plenty of water throughout the day. 8 glasses/day or more when exercising!
2) OMEGA-3s. Try increasing your intake of salmon, tuna and walnuts. Or instead, try a good-quality fish oil supplement.
3) ARTIFICIAL TEARS. And I don’t mean Visine. I mean a good quality artifical tear. My 2 favorite OTC brands are Blink and Refresh. Those with dry eyes benefit from using artifical tears several times a day.
If you’re still not having any relief after trying these 3 things, please let me know at the time of your eye exam, as sometimes certain underlying eyelid conditions and/or systemic conditions can be the source of the dryness you’re experiencing, and other treatment options may make more sense.
more: https://www.sighteyecare.com/blog/2016/11/1/the-top-three-things-to-try-when-your-eyes-feel-dry
Source: Sight Eye Care