Eye discharge, especially if it is discolored or white or has a foul odor.Trouble opening your eyes because of the stickiness of the crusting.Redness or swelling either around or in the eye. ![]() There are many signals that you should look out for, include: This leads to the potential reasons why crusty eyes may be a sign of something else. All of us experience eye crusting at times, especially if we are experiencing dry eyes, allergies, cold symptoms, or other respiratory ailments. When are crusty eyes a problem?Ĭhances are, the crusty eyes that you wake up with from time to time are normal, even if the crust is discolored. Normally, the eye discharge can become hard, crusty, sticky, and even change colors to yellow or green. We don’t blink when we sleep, so eye discharge tends to collect in the canthus regions as well as along the eyelash line. Eye crust can form because the nasolacrimal duct is not working properly in some patients. If someone has excess tears, like when they are crying or have watery eyes, the nasolacrimal duct is the reason we can taste our salty tears. If the nasolacrimal duct becomes blocked, it can cause excessive tearing called epiphora. The reason the eye crust collects more medially is that that is where our tears drain into our nose and nasal cavity through a conduit or pathway called the nasolacrimal duct. We have a medial (toward our nose) and a lateral (toward the side of our head) canthus in each eye, where the crust usually forms. The crust collects at the corners of our eyes, which are called the canthus. Since we don’t normally blink when we sleep, the tears collect mucus, blood cells, skin cells, and dust to form crust. Meibum helps prevent our tears from evaporating. The oil from the meibomian glands, or meibum, forms the outer layer of our tears. When we blink, we produce normal mucus by the conjunctiva, a thin mucous membrane that lines the inside of the eyelids, and oil from the meibomian glands, which line the eyelids near the eyelashes. ![]() ![]() Our cornea is an essential part of our eyes for vision. Then, when we wake after a good long, restful snooze, that stuff that has gathered in the corner of our eyes has dried out. As a result, dirt, dust, skin cells, mucus, and tear fluid accumulates. We don't continually clean our eyes when asleep because we aren't blinking. Waking with clumps of crusty stuff in the corners of our eyes is normal. Most of the time, crusty eyes are nothing to worry about, but there are exceptions. In some instances, crusty eyes must be treated by treating the underlying cause first.
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