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October 31, 2026
Crusty eyes in the morning are usually normal. The crust, often called sleep or eye boogers, is dried tear film. It forms from the oils, mucus and proteins in tears that collect while your eyes are closed [1,2]. A small amount of pale crust at the inner corners that wipes away easily is nothing to worry about.
More crust than usual, yellow or green discharge, lashes glued shut, or a red, sore or itchy eye is different. Those signs point to blepharitis, pink eye (conjunctivitis) or another eye problem [3,4].
Key takeaways
In this article
This article is general education, not a diagnosis. A newborn with eye discharge, or anyone with eye pain, light sensitivity or blurred vision that does not clear, should see a doctor today.
Normal sleep crust needs no doctor. See a doctor today for eye pain, light sensitivity, intense redness, or blurry vision that does not clear when you wipe your eye [7,10]. Newborns with discharge need a doctor right away [9]. Contact lens wearers with a red or discharging eye should remove their lenses and call an eye doctor now [8].
Go to the emergency room now if:
See a doctor today if:
Book a visit within a few days if:
Your eyes are crusty in the morning because tears keep collecting while you sleep, but blinking stops. When the eyes close, fast reflex tear flow nearly stops and a slower flow continues [2]. The oils, mucus and proteins in that tear film can then dry into crust [1,2].
During the day, each blink spreads fresh tears over the eye [15]. Old tears drain through a tiny opening at the inner corner, near the nose [13]. At night there are no blinks to sweep the residue away, so it builds up.
Common names include sleep, sleep crust, eye gunk and eye boogers. Normal crust is small, pale and dry or slightly sticky. The eye underneath is white and comfortable once you blink a few times.
Eye boogers are made of dried tear film. Tears contain water, salts, proteins, mucus (mucins) and oils (lipids) [1]. The oils come from small oil glands in the eyelids, called meibomian glands [3,5]. When this mix dries overnight, it forms the crust you wipe away in the morning.
More crust than usual often comes from eyelid inflammation (blepharitis), allergy or an eye infection [3,14,16]. Crusty eyes during a cold can be viral pink eye, which often comes with a cold, flu or other respiratory infection [4]. Dry eye can also add to morning irritation, especially if your eyelids stay slightly open at night [15].
If your eyes also feel dry and gritty on waking, read Netra's guide to waking up with dry eyes.
Normal sleep crust is a small amount of pale, dry crust in the inner corners on an otherwise comfortable eye. Blepharitis causes flaky crust at the base of the lashes. Pink eye causes heavier discharge with a red eye. The table shows the main differences [1,3,4,15,16].
| Cause | What the crust or discharge looks like | Other clues | What usually helps |
|---|---|---|---|
| Normal sleep crust | Small, pale, dry flecks in the inner corners | Eye is white and comfortable | Wash your face; no treatment needed |
| Blepharitis | Dandruff-like flakes at the lash base; crusty lids or lashes on waking [3,5] | Red, itchy, burning lids; gritty feeling; foamy tears [3,5] | Daily warm compress and lid cleaning [3,5] |
| Dry eye | Little discharge; irritation is the main problem [15] | Burning, grittiness, blurred vision that comes and goes [15] | Artificial tears; ointment at bedtime [15] |
| Allergic pink eye | Watery or stringy discharge [4,16] | Intense itching, both eyes, often sneezing [4] | Avoid triggers; cool compress; allergy eye drops [10,16] |
| Viral pink eye | Watery discharge [4] | Often with a cold; starts in one eye and spreads [4] | Cold compress and artificial tears; usually clears in 7 to 14 days [10] |
| Bacterial pink eye | Thick yellow, green or white pus; lids stuck together [4] | Little itching; sometimes with an ear infection [4,6] | Often clears on its own; antibiotic drops may shorten it [10,17] |
Crusty eyelashes on waking, with red, itchy or burning lid edges, are a common sign of blepharitis [3,5]. Blepharitis is inflammation of the eyelid edges. It is usually caused by too much bacteria at the base of the lashes or by clogged oil glands. It is not contagious [5].
There are two types, and many people have both [5]. Anterior blepharitis affects the outside of the lid where the lashes grow. Posterior blepharitis affects the inner lid edge, where the oil glands can clog [5]. Dandruff, rosacea and oily skin raise the risk [5]. A small eyelash mite called Demodex is another cause [3]. See Netra's guides to Demodex blepharitis and ocular rosacea.
Blepharitis usually does not go away completely, but it can be controlled [5]. A Cochrane review of 34 trials with 2,169 people found that lid cleaning may relieve symptoms [18]. Antibiotics applied to the lids helped some symptoms in the lash-line type [18]. No treatment was shown to cure long-term blepharitis [18].
Blepharitis also makes styes and chalazia (lumps from blocked lid glands) more likely [3,5]. Netra's page on chalazion vs stye explains the difference.
Often, yes. Thick yellow, green or white discharge that glues the lids together is typical of bacterial pink eye [4]. The strongest clues are lids stuck together on waking, little or no itching, and no past episodes of pink eye [6]. Watery discharge is more typical of viral or allergic pink eye [4].
Viral pink eye is the most common infectious type [6]. It usually clears in 7 to 14 days without treatment, though some cases take longer. Antibiotics do not help it [10].
Mild bacterial pink eye often clears in 2 to 5 days without treatment, but it can take up to two weeks [10]. A Cochrane review of 21 trials with 8,805 people found that antibiotic drops or ointment modestly raise the chance of cure. By days 4 to 9, about 68% of treated people were better, compared with about 56% on placebo [17].
Some cases need a doctor and antibiotics. These include pink eye in contact lens wearers and infections caused by gonorrhea or chlamydia [6]. Do not use leftover drops or someone else's drops.
To clean crusty eyes, first wash your hands. Then hold a clean, warm, wet cloth on your closed eyelids for a few minutes to soften the crust. Gently wipe the crust away from the lash line. Use a fresh cloth or cotton ball for each eye, and wash your hands again afterward [5,7].
Do not put saliva, breast milk, honey or home-made washes in the eye. Anything meant for use in the eye should be sterile [19]. In a South Indian study of people with corneal ulcers, breast milk was the most common home remedy they had used [20].
You cannot fully prevent normal sleep crust, and you do not need to. You can reduce extra crust by treating its cause. Keep up daily lid cleaning if you have blepharitis [3,5]. Never sleep in contact lenses unless your eye doctor says it is safe [21]. Treat dry eye or allergies if they are part of the problem [15,16].
If you wear contact lenses and wake with a red, painful or discharging eye, take the lenses out and call your eye doctor right away. Pain, light sensitivity, sudden blurred vision and unusual discharge can be signs of a corneal infection (microbial keratitis), which can cause blindness [8].
Germs are more likely to invade the cornea when lenses are worn too long or not cared for correctly [8]. To lower your risk:
Learn more about keratitis and corneal ulcer healing.
A newborn with eye discharge, red eyes or puffy lids should see a doctor right away [7,9]. Infections passed on during birth, such as gonorrhea and chlamydia, can cause serious harm if not treated quickly [9]. A baby's watery, crusty eye can also come from a blocked tear duct, which usually opens on its own by age 1 [13].
Infection in newborns. Gonorrhea infection usually starts in the first 2 to 5 days of life. Chlamydia usually starts 5 to 12 days after birth [9]. Untreated gonorrhea in the eye can cause corneal ulcers and blindness [9]. Mild redness and swelling lasting 24 to 36 hours after the eye drops given at birth can be a reaction to the drops [9].
Blocked tear duct. In babies, the tear drainage duct may not be fully open at birth. Extra tearing usually shows in the first 2 to 3 weeks, and dried tears can form crusts [13]. Clean the lids with a warm, wet washcloth. Your baby's doctor may show you how to gently massage from the inner corner toward the nose [9,13]. If the duct is still blocked by age 1, a procedure called probing can usually open it [9,13].
Call the doctor if the baby has pus in the eye, lids stuck together, or a red bump beside the nose. These can be signs of infection [13]. Only put drops or ointment in a baby's eye if a doctor prescribed them.
Netra Restoration Therapy (NRT) is not a treatment for eye crust, pink eye or eye infections. It has not been tested in controlled trials for blepharitis, dry eye crusting or conjunctivitis. A red eye with discharge needs an eye doctor first, and complementary care should never delay it.
Netra describes Netra Restoration Therapy as adjunctive care based on Traditional Chinese Medicine and Ayurveda. It is used alongside, never instead of, care from an eye doctor, and Netra states that it is not a cure [22]. Netra does not perform a comprehensive eye examination.
Netra Eye Institute is an integrative clinic in South Plainfield, New Jersey. If you have diagnosed, long-term blepharitis or dry eye, you can discuss supportive care alongside your eye doctor's plan. Bring your recent eye exam reports. Netra's page on NRT effectiveness explains why results are judged condition by condition and are not guaranteed [23].
Eye boogers are dried tear film that collects in the corners of the eyes and on the lashes during sleep. They are made of water, salts, proteins, mucus and oils from your tears. A small amount each morning is normal.
Yes, a small amount of pale crust in the inner corners every morning is normal. See an eye doctor if the crust is heavy, yellow or green, glues your lashes together, or comes with a red, painful or itchy eye. Crusty, flaky lashes that keep coming back can be a sign of blepharitis.
Viral pink eye often comes with a cold, flu or other respiratory infection. It causes watery discharge that can dry into crust overnight. It usually clears on its own in 7 to 14 days, and antibiotics do not help it.
Normal sleep crust is not contagious. Discharge from viral or bacterial pink eye can spread easily. Wash your hands often, avoid touching your eyes, and do not share towels, pillows or makeup until the infection clears.
No. Picking at dry crust can irritate the eye and lids. Soften the crust with a clean, warm, wet cloth for a few minutes, then wipe it gently away. Wash your hands before and after.
Yes. Eye allergies can cause watery or stringy discharge that dries into crust, along with itching, redness and puffy lids, often worst in the morning. Avoiding triggers, cool compresses and allergy eye drops usually help.
During the day, blinking keeps clearing your tears, so less crust builds up. Stringy discharge during the day often comes from allergy, and heavier discharge with a red eye suggests pink eye. Ongoing daytime discharge should be checked by an eye doctor.
Usually not. Normal sleep crust, viral pink eye and allergies do not need antibiotics. Mild bacterial pink eye often clears on its own, but antibiotic drops can shorten it. Contact lens wearers and newborns with discharge need a doctor's exam.
Sources checked October 31, 2026.
This article provides general education and does not replace an individual eye examination, diagnosis or treatment plan. Any newborn with eye discharge, and anyone with eye pain, light sensitivity or blurred vision, should see a doctor today; contact lens wearers with a red, painful eye should remove their lenses and call an eye doctor now.
