Common Eye Conditions • Eyelid disorders • Emergency-medicine learning resource
Disorders of the Eyelids: Ectropion, Entropion, Blepharitis and Styes
The eyelids protect the cornea, spread the tear film, remove debris and regulate light. Disorders of their skin, glands, muscles, margin or position can cause pain, tearing, dryness, recurrent infection and corneal damage. In emergency medicine, an apparently small lid lesion may coexist with an open-globe injury, orbital trauma, canalicular damage or exposure keratopathy. Examine the globe and vision before treating the lid alone.
Emergency warning: Reduced vision, severe pain, photophobia, corneal opacity, proptosis, painful/restricted eye movements, an irregular pupil, lid laceration with fat prolapse or medial-canthus injury, chemical exposure, rapidly spreading swelling, fever or inability to close the eye requires urgent ophthalmic assessment.
Learning objectives
- Describe eyelid anatomy and the protective functions of blinking, the lid margin and meibomian glands.
- Classify and recognise ectropion, entropion, blepharitis, hordeolum (stye), chalazion, ptosis, trichiasis, lagophthalmos and eyelid trauma.
- Differentiate common benign lid disease from preseptal/orbital cellulitis and sight-threatening corneal disease.
- Take a focused history and perform a safe external eye examination.
- Provide first aid, medical treatment principles, referral criteria, nursing care and prevention.
1. Eyelid anatomy and physiology
| Structure | Function | Clinical relevance |
|---|---|---|
| Skin and orbicularis oculi | Thin protective covering; orbicularis closes the lids and drives blinking. | Facial-nerve palsy or scarring may cause lagophthalmos and exposure keratopathy. |
| Tarsal plates | Dense connective framework that gives lids shape. | Contain meibomian glands; injury can distort the lid margin. |
| Meibomian glands | Secrete lipid that reduces tear evaporation. | Dysfunction contributes to dry eye, blepharitis and chalazion. |
| Lash follicles/Zeis and Moll glands | Protective lashes and associated sebaceous/apocrine glands. | Infection can produce an external hordeolum. |
| Conjunctival fornices | Allow lid and globe movement and retain tear film. | Foreign bodies may hide in the superior fornix. |
| Levator palpebrae and superior tarsal muscle | Elevate upper lid through CN III and sympathetic contributions. | Ptosis may indicate nerve, muscle, tendon or mechanical disease. |
| Lacrimal puncta | Drain tears from the medial lid margin. | Ectropion, trauma or inflammation can cause watering. |
2. Assessment of a patient with eyelid disease
- Stabilise: check airway, breathing, circulation, neurological status and severe systemic infection first.
- Ask about onset and progression: hours/days versus chronic; recurrent versus first episode.
- Check sight: visual acuity each eye, pupils/RAPD, visual fields when indicated and colour if optic-nerve disease is suspected.
- Assess pain and inflammation: surface pain, deep pain, photophobia, fever, headache, nausea/vomiting and pain on movement.
- Inspect both lids: position, margin, lashes, swelling, wounds, crusts, nodules, skin disease, closure and symmetry.
- Examine the globe: conjunctiva, cornea, anterior chamber, pupil, motility and proptosis; never assume the lid is the whole problem.
- Consider risk factors: diabetes, immunosuppression, rosacea, seborrhoeic dermatitis, eczema, contact lenses, trauma, surgery and topical medicines.
3. Eyelid malposition
Entropion
Entropion is inward rotation of the eyelid margin, usually the lower lid, causing lashes and skin to rub against the ocular surface. It can be involutional (age-related), cicatricial (scarring), spastic or congenital.
| Cause | Mechanism | Clues |
|---|---|---|
| Involutional | Lid laxity, orbicularis override and weakening of retractors. | Older adult, intermittent inward turning, worse with squeezing. |
| Cicatricial | Shortening/scarring of the posterior lamella or conjunctiva. | Trachoma, chemical injury, burns, autoimmune mucous-membrane disease or surgery. |
| Spastic | Orbicularis spasm triggered by painful ocular-surface disease. | Acute blepharospasm and secondary entropion. |
| Congenital | Developmental lid configuration. | Child with lash contact; distinguish from epiblepharon. |
Symptoms/signs: foreign-body sensation, tearing, photophobia, redness, recurrent abrasions, trichiasis and corneal ulceration. Inspect the cornea with fluorescein and document visual acuity.
Ectropion
Ectropion is outward eversion of the lid margin, most often the lower lid. The punctum may no longer contact the tear lake, causing epiphora, and the exposed conjunctiva/cornea may dry.
| Cause | Examples | Complications |
|---|---|---|
| Involutional | Age-related horizontal laxity. | Watering, exposure and chronic conjunctivitis. |
| Paralytic | Facial-nerve (CN VII) palsy. | Lagophthalmos and exposure keratopathy. |
| Cicatricial | Burns, trauma, skin disease, surgery or scarring. | Progressive exposure and corneal damage. |
| Mechanical | Tumour, oedema or heavy lid lesion. | Malposition improves only when the cause is addressed. |
Symptoms/signs: excessive tearing, dryness, irritation, visible everted punctum, conjunctival exposure and incomplete closure. Check facial movement and corneal staining.
4. Blepharitis
Blepharitis is chronic or recurrent inflammation of the eyelid margins. It may be anterior, posterior or mixed. Causes include bacterial colonisation, seborrhoeic dermatitis, rosacea, atopy, meibomian-gland dysfunction, Demodex infestation, allergy and medication irritation. Chronic unilateral disease with lash loss or an atypical mass requires assessment for masquerading tumour or autoimmune scarring disease.
| Type | Main site/features | Associations |
|---|---|---|
| Anterior staphylococcal | Crusts/collarettes at lash bases, lid-margin erythema, recurrent styes. | Bacterial colonisation, chronic inflammation. |
| Anterior seborrhoeic | Greasy scales, dandruff and mild redness. | Seborrhoeic dermatitis. |
| Posterior/meibomian | Plugged glands, thick secretions, lid-margin telangiectasia and tear-film instability. | Rosacea, meibomian-gland dysfunction, evaporative dry eye. |
| Demodectic | Cylindrical dandruff/collarettes and recurrent irritation. | Demodex overgrowth; may be chronic and refractory. |
| Contact/allergic | Itching, oedema, dermatitis and burning after a product/drop. | Cosmetics, preservatives, topical medication or atopy. |
Symptoms and signs
- Burning, itching, grittiness, foreign-body sensation, crusting and fluctuating blur.
- Red/swollen lid margins, collarettes, capped meibomian glands and abnormal tear film.
- Dry-eye symptoms, recurrent hordeola/chalazia, conjunctival injection and corneal punctate staining.
- Severe pain, reduced acuity, marked photophobia, corneal infiltrate or proptosis is not typical uncomplicated blepharitis and needs urgent reassessment.
Management
- Lid hygiene: warm (not scalding) compresses for several minutes, gentle lid massage toward the margin and careful cleaning of crusts; continue long-term even after symptoms improve.
- Surface support: preservative-free lubricants when dry eye coexists; manage environmental triggers and blinking.
- Underlying skin disease: treat seborrhoeic dermatitis, rosacea or atopy with the appropriate clinician.
- Medicines: topical antibiotic ointment or short anti-inflammatory treatment may be used for selected cases under local/ophthalmic protocol. Oral tetracycline-class therapy may be considered by specialists for significant meibomian/rosacea disease; account for pregnancy, age, allergy and interactions.
- Demodex: specialist-directed lid therapy may be required; avoid unapproved household products near the eye.
- Follow-up: chronic disease relapses; review cornea, tear film, lash loss and response rather than stopping all care after one improvement.
5. Stye (hordeolum)
A hordeolum or stye is an acute, tender, localised infection/inflammation of an eyelid gland, usually staphylococcal. An external hordeolum involves a lash follicle/Zeis or Moll gland; an internal hordeolum involves a meibomian gland and may be deeper.
| Feature | External hordeolum | Internal hordeolum |
|---|---|---|
| Location | Focal lesion at lid margin/lash follicle. | Within tarsal plate/meibomian gland. |
| Appearance | Small pustule or tender red bump near lashes. | Diffuse tender lid swelling; may point on palpebral conjunctiva. |
| Course | Often resolves with warm compresses. | May require specialist drainage if persistent or abscessed. |
| Risk | Blepharitis, rubbing, contaminated cosmetics. | Meibomian dysfunction, rosacea or recurrent disease. |
Management
- Warm compresses several times daily, gentle hygiene and avoidance of squeezing or piercing.
- Stop eye makeup and contact lenses until resolved; do not share towels or cosmetics.
- Topical antibiotic treatment is not required for every uncomplicated lesion; use only when clinically indicated by local protocol, especially if associated blepharitis or conjunctivitis.
- Refer for incision/drainage when a fluctuant abscess persists, vision is affected, pain is severe or diagnosis is uncertain.
- Systemic antibiotics are considered when there is preseptal cellulitis or spreading infection, not for a tiny uncomplicated stye alone.
6. Chalazion: important distinction
A chalazion is a chronic lipogranulomatous inflammation from blocked meibomian secretions, usually a painless firm nodule away from the lid edge. It is not the same as an acute infected stye, although a hordeolum can evolve into a chalazion.
- Warm compresses and gentle massage may allow drainage; persistent lesions may require intralesional treatment or curettage by an eye clinician.
- Recurrent, atypical, ulcerated or lash-loss lesions need biopsy consideration because sebaceous carcinoma and other tumours can masquerade as chalazion/blepharitis.
- A lesion near the medial canthus should be differentiated from dacryocystitis or canaliculitis.
7. Other common eyelid disorders
| Disorder | Key features | Important action |
|---|---|---|
| Ptosis | Drooping upper lid; acute with diplopia/pupil change may be neurogenic. | Check pupils, EOM, fatigue, headache and neurological signs; urgent if acute/associated. |
| Trichiasis | Lashes turn toward the cornea without necessarily turning the whole lid inward. | Remove offending lash only when trained; assess for corneal damage and scarring. |
| Lagophthalmos | Incomplete closure, often facial palsy, proptosis or sedation. | Lubricate/protect cornea and urgently manage exposure if staining or reduced vision. |
| Dermatitis | Itchy erythematous scaly skin from atopy/contact/allergy. | Remove trigger; avoid steroid near eye without supervision; assess globe. |
| Blepharospasm | Involuntary forceful blinking or closure. | Look for corneal irritation, medication effects or dystonia; assess vision. |
| Eyelid tumour | Persistent nodule, ulcer, bleeding, lash loss or distortion. | Urgent specialist assessment/biopsy; do not repeatedly treat as stye. |
8. Management of entropion and ectropion
| Goal | Entropion | Ectropion |
|---|---|---|
| Protect cornea now | Lubrication, ointment, temporary taping or other specialist-directed method; remove damaging lashes when trained. | Lubrication, ointment at night, moisture protection and taping if appropriate. |
| Treat cause | Address scarring, inflammation, spasm, trachoma or autoimmune disease. | Manage facial palsy, scars, tumours, burns or lid laxity. |
| Definitive treatment | Usually surgical lid-margin rotation/repair when established or cornea is threatened. | Surgical tightening/reconstruction when persistent, symptomatic or exposure threatens the cornea. |
| Urgent referral | Corneal abrasion/ulcer, severe pain, reduced vision or inability to protect the eye. | Lagophthalmos, exposure keratopathy, corneal ulcer or acute facial palsy with other neurological signs. |
Do not give false reassurance: chronic lash contact can scar the cornea, while ectropion can cause exposure, infection and loss of vision. Arrange ophthalmic follow-up even when temporary lubrication improves symptoms.
9. Eyelid infection and the emergency differential
| Condition | Typical findings | Management urgency |
|---|---|---|
| Local stye | Focal tender lid-margin nodule; normal vision and movements. | Warm compresses and review; urgent if spreading/atypical. |
| Preseptal cellulitis | Lid erythema/swelling, fever possible; vision and movements usually preserved, no proptosis. | Same-day medical assessment; antibiotics and close review per protocol. |
| Orbital cellulitis | Proptosis, painful/restricted movements, reduced vision, RAPD, fever/systemic illness. | Emergency admission, imaging and IV treatment. |
| Orbital compartment syndrome | Rapid proptosis, tense lids, severe pain, RAPD, visual loss, high pressure/ophthalmoplegia. | Immediate emergency ophthalmology/surgical decompression pathway. |
| Herpes zoster ophthalmicus | Unilateral painful vesicular rash in V1 distribution, possible corneal/uveal disease. | Urgent antiviral/ophthalmic assessment; do not delay for rash to spread. |
10. Eyelid trauma and laceration
Any lid laceration may conceal globe, orbital or lacrimal injury. Examine visual acuity, pupils, motility, cornea, anterior chamber and globe position before repair where safe.
- Simple superficial laceration: small, not involving lid margin/canaliculus and without fat prolapse may be managed by trained clinicians after ocular injury is excluded.
- Complex laceration: lid margin, medial canthus, canaliculus, full thickness, tissue loss, orbital fat prolapse, avulsion, levator injury or suspected open globe requires ophthalmic/oculoplastic repair.
- Control bleeding with gentle pressure around—not on—a suspected open globe. Remove only loose surface contamination; do not probe deep wounds.
- Assess tetanus status, bite contamination and need for systemic antimicrobial treatment according to local trauma protocol.
- Use a rigid shield and avoid pressure when globe injury is possible. Do not patch tightly.
11. Nursing and emergency-care interventions
- Record baseline VA, pupils and pain; repeat after treatment or deterioration.
- Maintain hand hygiene, clean technique and separate towels/linen for discharge.
- Administer prescribed drops/ointments with correct technique; avoid touching the cornea or dropper tip.
- Apply warm compresses safely—test temperature, avoid burns and do not share cloths.
- Protect an exposed cornea with lubrication and a moisture chamber or shield according to protocol; do not occlude an infected eye without advice.
- For trauma, keep the patient calm, minimise vomiting/straining, avoid food if surgery may be needed and arrange safe transport.
- Educate on no rubbing, no squeezing styes, stopping contact lenses/makeup and returning for vision change, pain, fever, proptosis or corneal symptoms.
12. Prevention
- Daily lid hygiene for recurrent blepharitis; manage dandruff, rosacea and atopy.
- Hand hygiene and clean contact-lens practice; replace cosmetics and avoid sharing them.
- Protective eyewear for dust, chemicals, grinding, welding and high-velocity work.
- Early treatment of facial palsy, lid malposition and exposure before corneal injury develops.
- Review recurrent styes/chalazia, unilateral lash loss or non-healing lesions for systemic disease or tumour.
13. Applied cases
Case 1: Inward-turning lashes
An older adult has chronic tearing and foreign-body sensation. The lower lid turns inward and fluorescein shows an epithelial defect. Protect the cornea with lubrication, avoid rubbing, document VA and arrange ophthalmic repair; recurrent abrasions can scar the cornea.
Case 2: Red swollen lid with fever
A child has fever, proptosis and painful restricted eye movements. This is not a simple stye or preseptal cellulitis; orbital cellulitis is an emergency. Arrange admission, imaging and IV treatment.
Case 3: Recurrent “stye” with lash loss
An adult has a persistent unilateral lid nodule repeatedly treated as a stye, with loss of lashes. Consider eyelid malignancy or masquerading inflammatory disease and arrange specialist examination/biopsy.
Case 4: Medial eyelid laceration
After blunt facial trauma, a cut involves the medial canthus and tears continuously. Suspect canalicular injury; assess the globe, shield if needed and refer for specialist repair rather than simple skin closure.
14. Self-test
- Define entropion and ectropion.
- How does entropion damage the cornea?
- List four causes of ectropion.
- Differentiate hordeolum from chalazion.
- What is the foundation of chronic blepharitis management?
- Name three signs that suggest orbital rather than preseptal cellulitis.
- When is an eyelid laceration complex?
- Why should a suspected open globe not be pressed or tightly patched?
- Which recurrent lid lesion needs consideration of biopsy?
- What baseline visual assessments should be documented?
Answers
- Entropion is inward turning of the lid margin; ectropion is outward eversion.
- Lashes/skin rub the cornea, causing abrasion, ulceration, infection and scarring.
- Involutional laxity, facial-nerve palsy, cicatricial burns/trauma/surgery and mechanical tumour/weight.
- Hordeolum is an acute tender infected gland; chalazion is a chronic usually painless meibomian lipogranuloma.
- Long-term lid hygiene, warm compresses, treatment of skin disease and management of dry eye/meibomian dysfunction.
- Proptosis, painful/restricted movements, reduced vision/RAPD, fever/systemic toxicity and diplopia.
- Margin, medial canthus/canaliculus, full thickness, fat prolapse, tissue loss, avulsion, levator injury or suspected globe/orbital injury.
- Pressure can extrude ocular contents and worsen a full-thickness wound; tight patches also add pressure and hide deterioration.
- Persistent/recurrent atypical chalazion or unilateral blepharitis with lash loss/ulceration.
- Visual acuity each eye, pupils/RAPD, fields when relevant, motility, pain and external/globe findings.
Key takeaways
- Eyelid disease can threaten the cornea even when the globe initially looks quiet.
- Entropion causes lash trauma; ectropion causes tear-drainage failure and exposure.
- Blepharitis is chronic and needs sustained lid hygiene; recurrent lesions need reassessment.
- Always distinguish a local stye from orbital cellulitis, open-globe injury and eyelid tumour.
- Measure vision and examine the globe before treating the lid alone.
