Every time you blink when you game, a thin layer of tears is spread across the cornea. This thin layer of moisture, known as the tear film, forms a protective coat that lubricates your eyes and washes away any debris that might harm or obscure your vision when you are in a life or death situation in game.

Dry eye happens when the tear glands stop making enough tears, produce poor-quality tears, or the tears evaporate too quickly, causing your eyes to feel dry and irritated. It is more likely to happen when you are focusing hard on your game as you are trying to provide as much information as possible to your brain to take faster decisions.