Don't underestimate the importance of getting enough sleep. A 2021 study in the Netherlands found that poor sleep quality is associated with compromised tear production and dry eyes across ages and genders. Some people also have dry eyes related to lagophthalmos, and their eyes never close completely when they blink or fall asleep. At night, the exposed area loses moisture, and there are ointments to create a protective layer for true "shut-eye."

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