Blepharitis
Also known as: Eyelid inflammation, Meibomian gland dysfunction
Blepharitis is chronic inflammation of the eyelid margins, the edges of the lids where the eyelashes grow. It causes red, itchy, gritty, crusty eyelids and is one of the most common eye complaints seen by doctors and optometrists. There are two overlapping forms: anterior blepharitis affects the outside of the lid around the lashes and is linked to bacteria or dandruff-like scaling, while posterior blepharitis involves the meibomian (oil) glands inside the lid, whose blockage leads to dry, irritated eyes. Blepharitis is uncomfortable and tends to recur, but it rarely threatens sight. A consistent eyelid hygiene routine controls it for most people.
At a Glance
- Common symptoms
- Red, swollen, or itchy eyelid edges, Crusting or flakes at the base of the eyelashes, especially on waking, Gritty, burning, or sandy sensation in the eyes
- Main treatments
- Daily eyelid hygiene: warm compresses, gentle lid massage, and cleaning the lid margins with diluted baby shampoo or a lid cleanser, Antibiotic ointment applied to the lid margins for anterior blepharitis, Oral antibiotics such as doxycycline for several weeks in posterior blepharitis or rosacea-related cases, used for their anti-inflammatory effect
- Category
- Eye & Ear · Very common; one of the most frequent eyelid conditions seen in eye clinics, more so in older adults
- See a doctor if
- Symptoms not improving after a few weeks of regular lid hygiene
Symptoms
Causes
- Bacterial overgrowth (commonly staphylococcal) on the lid margin
- Seborrheic dermatitis affecting the scalp, brows, and eyelids
- Blockage or dysfunction of the meibomian oil glands
- Demodex mites living in the lash follicles
- Rosacea, which commonly affects the eyelids
- Allergic reactions to eye makeup or eye drops
Risk Factors
- Rosacea or seborrheic dermatitis
- Dry eye syndrome
- Older age
- Contact lens wear
- Diabetes
- Hormonal changes and certain medications such as isotretinoin
Diagnosis
- History of symptoms and their pattern
- Examination of the eyelids and eyes, often with a slit lamp to view the lid margins and gland openings
- Checking for associated conditions such as dry eye, rosacea, or dandruff
- Occasionally lash sampling to look for Demodex mites
Treatment
- Daily eyelid hygiene: warm compresses, gentle lid massage, and cleaning the lid margins with diluted baby shampoo or a lid cleanser
- Antibiotic ointment applied to the lid margins for anterior blepharitis
- Oral antibiotics such as doxycycline for several weeks in posterior blepharitis or rosacea-related cases, used for their anti-inflammatory effect
- Tea tree oil-based products for Demodex infestation
- Lubricating eye drops for associated dry eye, and short courses of steroid drops under supervision for marked inflammation
- In-office treatments such as thermal pulsation or intense pulsed light for stubborn meibomian gland dysfunction
- Supportive: omega-3 fatty acids may improve oil gland function and dry eye symptoms for some people, though trial results are mixed
Prevention
- Keep up eyelid hygiene even when symptoms have settled, as blepharitis tends to return
- Remove eye makeup thoroughly every night and replace mascara regularly
- Treat dandruff and seborrheic dermatitis of the scalp and face
- Avoid rubbing your eyes
- Follow good contact lens hygiene
When to See a Doctor
- Symptoms not improving after a few weeks of regular lid hygiene
- Pain, significant redness of the eye itself, or vision changes
- A lump on the eyelid that is growing or not resolving
- Loss of eyelashes or eyelid distortion
- Recurrent styes or chalazia
Frequently Asked Questions
Related Conditions
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