Waking up with dry or irritated eyes can be caused by incomplete eyelid closure, blepharitis or the bedroom environment. The specific cause determines the treatment.
Noticing dry, sticky or irritated eyes first thing in the morning is a very common complaint, and it usually has a specific explanation: during the night, tear production decreases naturally and, in addition, the eye rests without the blinking that throughout the day continuously spreads and renews the tear film. This combination means that many people with a tendency towards dry eye notice their symptoms most intensely right after waking up.
However, there is one cause that stands out above the rest when morning symptoms are pronounced: incomplete eyelid closure during sleep, a condition known as nocturnal lagophthalmos.
If the eyelids do not close fully while we sleep, part of the eye's surface remains exposed to the air all night and dries out. Many people are unaware that this is happening to them, because it occurs while they are asleep, and they only notice the result when they wake up: a sensation of grittiness, stinging or difficulty opening the eyes comfortably.
Another very common cause is Meibomian gland dysfunction, involving the glands along the eyelid margin that produce the lipid layer of the tear film. When they do not function properly, tears evaporate easily and the eye wakes up dry. This dysfunction is frequently associated with blepharitis, a chronic inflammation of the eyelid margin that tends to cause more symptoms in the morning, with eyelids stuck together or small crusts at the base of the lashes.
Bedroom environment factors can also play a role: air conditioning or heating left on overnight dries out the air and accelerates tear evaporation, worsening symptoms upon waking.
The good news is that morning dry eye has specific solutions depending on its cause, from thicker lubricants for overnight use to treatment of eyelid dysfunction or measures to encourage complete eyelid closure during sleep. If you regularly wake up with dry or irritated eyes, the most advisable step is an ophthalmological assessment to identify the specific reason in your case, as the solution is not the same for everyone.