Entropion (Inward-Turning Eyelid)
Entropion is an eyelid disorder where the eyelid margin turns inward, causing the eyelashes and skin to rub against the ocular surface. This can lead to irritation, tearing, corneal damage, and discomfort.
What Is Entropion?
Entropion is an abnormal inward rotation of the eyelid margin, most commonly affecting the lower eyelid. When the eyelid turns inward, eyelashes may continuously touch the cornea and conjunctiva.
Normal eyelid anatomy keeps eyelashes directed away from the eye. In entropion, changes in eyelid support structures, muscle function, or scar formation alter the eyelid position.
Persistent eyelash contact can cause foreign body sensation, excessive tearing, redness, inflammation, and possible corneal injury if untreated.
Eyelid Anatomy Involved in Entropion
Several eyelid structures work together to maintain proper eyelid position.
Eyelid Margin
The edge of the eyelid where eyelashes emerge. Proper alignment prevents lash contact with the ocular surface.
Eyelashes
Normally directed outward, but may rub against the eye when the lid turns inward.
Tarsal Plate
A firm connective tissue structure that provides eyelid stability and shape.
Orbicularis Oculi Muscle
Controls eyelid closure and may contribute to inward rotation when abnormal.
Eyelid Supporting Structures
Weakness or changes in eyelid support structures can allow the eyelid to rotate inward.
Eyelid Retractors
Help maintain normal lower eyelid position and prevent inward rotation.
Canthal Tendons
Support eyelid attachment and stability at the corners of the eye.
Orbital Septum
A connective tissue barrier contributing to eyelid structural support.
Normal Eyelid Position vs Entropion
Proper eyelid alignment protects the ocular surface and maintains tear distribution.
Normal Eyelid Position
- Eyelid margin aligned correctly
- Lashes point away from the eye
- Normal blinking function
- Healthy ocular surface protection
Entropion
- Eyelid rotates inward
- Lashes contact cornea
- Eye irritation occurs
- Risk of corneal injury increases
Types of Entropion
Involutional Entropion
The most common type caused by age-related eyelid laxity and weakening of supporting structures.
Cicatricial Entropion
Caused by scarring of the inner eyelid surface that pulls the eyelid inward.
Congenital Entropion
Present at birth due to eyelid structural abnormalities.
Spastic Entropion
Occurs when eyelid muscle spasms cause inward rotation.
Acute Inflammatory Entropion
Temporary inward turning caused by inflammation and swelling.
Why Does Entropion Occur?
Entropion develops when the balance between eyelid support, muscle action, and tissue tension becomes disrupted.
Aging Changes
Loss of eyelid elasticity and tendon stretching can allow inward rotation.
Eyelid Laxity
Weak supporting tissues reduce eyelid stability.
Muscle Dysfunction
Abnormal orbicularis muscle activity can pull the eyelid inward.
Scar Formation
Cicatricial changes shorten eyelid tissues and distort position.
Common Causes & Risk Factors
Aging
The most common risk factor due to progressive eyelid tissue weakening.
Previous Eyelid Surgery
Surgical changes may occasionally alter eyelid position.
Trauma
Injury can damage eyelid supporting structures.
Chemical Injury
Chemical burns may cause scarring and eyelid distortion.
Chronic Blepharitis
Long-term eyelid inflammation may contribute to irritation and malposition.
Ocular Surface Disease
Chronic inflammation can worsen eyelid discomfort.
Conditions Associated With Entropion
Dry Eye Disease
Eyelid malposition can disrupt tear distribution and increase dryness.
Corneal Abrasion
Repeated lash contact may scratch the cornea.
Corneal Ulcer
Untreated corneal injury may increase infection risk.
Blepharitis
Eyelid inflammation may worsen symptoms and irritation.
Symptoms & Clinical Signs
Symptoms of entropion occur because the eyelid margin and eyelashes rub against the ocular surface. Severity depends on how much the eyelid turns inward and how long the condition has been present.
Common Symptoms
- Foreign body sensation
- Eye irritation
- Excessive tearing
- Eye redness
- Burning sensation
- Light sensitivity
- Blurred vision
- Eye discomfort
Clinical Findings
- Inward rotation of eyelid margin
- Eyelashes touching the cornea
- Conjunctival irritation
- Corneal staining
- Eyelid laxity
- Ocular surface inflammation
Functional Effects of Entropion
Persistent eyelid malposition can interfere with normal eyelid protection, blinking, and ocular surface health.
Foreign Body Sensation
Constant eyelash contact creates a sensation of sand or debris in the eye.
Tearing
Irritation stimulates reflex tearing and watery eyes.
Eye Redness
Chronic mechanical irritation causes conjunctival inflammation.
Pain
Corneal irritation or abrasions may cause discomfort or pain.
Blurred Vision
Tear film disruption and corneal damage may reduce visual clarity.
Clinical Examination of Entropion
A detailed eyelid evaluation identifies the type of entropion and determines the severity of ocular surface involvement.
External Eyelid Evaluation
Assessment of eyelid position, margin rotation, lashes, and facial symmetry.
Eyelid Laxity Testing
Evaluates the strength of eyelid support structures.
Corneal Examination
Determines whether eyelash contact has caused surface damage.
Snap-Back Test
The snap-back test evaluates lower eyelid tone and horizontal laxity.
Normal Finding
- Eyelid returns quickly to position
- Good eyelid tone
- Stable eyelid support
Abnormal Finding
- Delayed eyelid return
- Increased laxity
- Higher risk of entropion
Eyelid Distraction Test
The distraction test measures how easily the lower eyelid can be pulled away from the globe.
Normal Eyelid Stability
The eyelid remains closely positioned against the eye.
Eyelid Laxity
Excess movement suggests weakened supporting tissues.
Corneal Examination
The cornea must be evaluated because chronic eyelash contact can create significant ocular surface damage.
Fluorescein Staining
Highlights corneal epithelial defects caused by eyelash rubbing.
Corneal Abrasion Evaluation
Identifies scratches or areas of epithelial breakdown.
Ocular Surface Assessment
Evaluates dryness, inflammation, and tear film stability.
Assessing Severity of Entropion
Severity depends on eyelid position, lash contact, and the degree of ocular surface damage.
Eyelid Position
The amount of inward rotation determines the severity of malposition.
Lash-Cornea Contact
Greater lash contact increases the risk of corneal irritation.
Ocular Surface Damage
Corneal staining or ulcers indicate more advanced disease.
Differential Diagnosis
Several eyelid and lash disorders can mimic entropion and must be carefully distinguished.
Ectropion
Outward turning of the eyelid margin causing exposure and tearing.
Trichiasis
Abnormally directed eyelashes rubbing against the eye without eyelid inversion.
Distichiasis
An extra row of eyelashes that may irritate the ocular surface.
Blepharospasm
Involuntary eyelid muscle contractions that may affect eyelid position.
Dermatochalasis
Excess eyelid skin that may cause heaviness but does not rotate the eyelid margin inward.
Associated Conditions
Dry Eye Disease
Eyelid malposition can worsen tear film instability and irritation.
Blepharitis
Chronic eyelid inflammation may increase discomfort and lash abnormalities.
Stevens-Johnson Syndrome
Severe mucocutaneous disease may cause scarring and cicatricial entropion.
Ocular Cicatricial Pemphigoid
An autoimmune scarring disorder that can distort eyelid anatomy.
Inflammatory Causes of Entropion
Inflammation and scarring of the inner eyelid surface may permanently alter eyelid position.
Cicatricial Changes
- Conjunctival scarring
- Eyelid shortening
- Inward eyelid rotation
Common Causes
- Trauma
- Chemical burns
- Chronic inflammation
- Autoimmune disease
Key Clinical Questions
When Did Symptoms Begin?
Sudden onset may suggest inflammation, while gradual onset often suggests aging-related changes.
Is Vision Affected?
Blurred vision may indicate corneal involvement.
Is There Pain?
Pain may suggest corneal injury or infection.
Treatment Options for Entropion
Treatment of entropion depends on the cause, severity, duration of symptoms, and whether the ocular surface has been damaged.
Temporary Management
Short-term treatments may reduce irritation and protect the cornea while definitive treatment is planned.
Medical Treatment
Medications may improve symptoms caused by dryness, inflammation, or ocular surface irritation.
Surgical Correction
Surgery is the definitive treatment for persistent eyelid malposition.
Temporary Management of Entropion
Temporary measures help reduce discomfort and protect the cornea while waiting for corrective treatment.
Lubrication
Artificial tears and lubricating ointments reduce friction between eyelashes and the ocular surface.
Eyelid Taping
Medical tape may temporarily reposition the eyelid away from the eye.
Protective Measures
Reducing eye rubbing and protecting the ocular surface can decrease irritation.
Bandage Contact Lens
A protective lens may shield the cornea from repeated eyelash trauma in selected cases.
Ocular Surface Protection
Protecting the cornea is an important component of entropion management because continuous eyelash contact can cause epithelial damage.
Artificial Tears
- Reduce irritation
- Improve tear film stability
- Relieve dryness symptoms
Lubricating Ointments
- Provide longer protection
- Reduce overnight friction
- Protect exposed corneal areas
Medical Treatment
Medical treatment does not correct structural entropion but may help control associated inflammation and discomfort.
Treat Ocular Surface Inflammation
Inflammation management may improve comfort and reduce irritation.
Manage Dry Eye Disease
Improving tear quality may reduce symptoms caused by eyelid rubbing.
Treat Blepharitis
Controlling eyelid inflammation may improve associated discomfort.
Surgical Treatment of Entropion
Surgery is the primary treatment for persistent entropion because it addresses the structural cause of eyelid rotation.
Lateral Tarsal Strip Procedure
A common procedure that tightens the lower eyelid and restores proper eyelid support.
Everting Sutures
Sutures may temporarily or permanently rotate the eyelid margin outward.
Retractor Repair
Repairs weakened lower eyelid retractors to improve eyelid position.
Scar Release
Cicatricial entropion may require correction of scar tissue and eyelid shortening.
Lateral Tarsal Strip Procedure
The lateral tarsal strip is one of the most commonly performed procedures for involutional lower eyelid entropion.
Purpose
- Tighten lower eyelid
- Improve eyelid stability
- Restore normal eyelid position
- Reduce lash contact
Common Candidates
- Age-related entropion
- Eyelid laxity
- Lower eyelid malposition
Everting Sutures
Everting sutures help rotate the eyelid margin outward and may be used in selected patients.
Advantages
Can provide correction with a less invasive approach in appropriate cases.
Limitations
May have a higher recurrence rate if underlying eyelid laxity is not corrected.
Lower Eyelid Retractor Repair
Weakening or disinsertion of the lower eyelid retractors contributes to involutional entropion.
Goal
Restore normal lower eyelid support and alignment.
Combination Treatment
Often combined with eyelid tightening procedures.
Cicatricial Entropion Management
Cicatricial entropion requires treatment of the underlying scar-related shortening of the eyelid.
Scar Release
Releases contracted scar tissue causing inward eyelid rotation.
Mucous Membrane Grafting
May restore eyelid length in severe scarring cases.
Treat Underlying Disease
Autoimmune or inflammatory causes must also be addressed.
Congenital Entropion Management
Congenital cases require evaluation of eyelid anatomy and severity.
Mild Cases
May improve with observation and lubrication.
Persistent Cases
Surgical correction may be required to prevent corneal damage.
Postoperative Care After Entropion Surgery
Proper postoperative management promotes healing and reduces complications.
Cold Compresses
Help reduce swelling and discomfort after surgery.
Ocular Lubrication
Protects the ocular surface during recovery.
Follow-Up Visits
Monitor eyelid position, healing, and corneal health.
Complications of Entropion Surgery
Recurrence
Entropion may return if underlying eyelid laxity persists.
Overcorrection
The eyelid may rotate outward excessively, causing ectropion.
Undercorrection
Residual inward rotation may remain.
Dry Eye Symptoms
Temporary ocular surface irritation may occur after surgery.
Preventing Entropion Complications
Protect the Cornea
Use lubrication and seek treatment when irritation occurs.
Manage Eyelid Disease
Treat blepharitis and inflammatory conditions early.
Regular Eye Examinations
Early detection prevents long-term ocular surface damage.
Entropion Treatment Comparison
| Treatment | Purpose | Common Use |
|---|---|---|
| Lubrication | Protect ocular surface | Temporary relief |
| Eyelid Taping | Temporarily reposition eyelid | Short-term management |
| Lateral Tarsal Strip | Tighten eyelid support | Involutional entropion |
| Scar Release | Correct eyelid scarring | Cicatricial entropion |
Complications of Entropion
Untreated entropion can cause chronic irritation of the ocular surface and may lead to serious corneal complications.
Ocular Surface Complications
- Corneal abrasion
- Corneal epithelial breakdown
- Chronic irritation
- Dry eye symptoms
- Conjunctival inflammation
Vision-Related Complications
- Blurred vision
- Corneal scarring
- Infectious keratitis
- Reduced visual quality
- Permanent vision loss in severe cases
Corneal Abrasion
Repeated rubbing of eyelashes against the cornea can create scratches on the corneal surface.
Symptoms
- Eye pain
- Foreign body sensation
- Light sensitivity
- Tearing
Evaluation
Fluorescein staining helps identify areas of corneal epithelial disruption.
Management
Treatment includes lubrication, protection of the ocular surface, and correction of the eyelid abnormality.
Corneal Ulcer
A corneal ulcer may develop when persistent epithelial damage allows bacteria or other microorganisms to infect the cornea.
Warning Signs
- Increasing eye pain
- Decreased vision
- Corneal opacity
- Severe redness
- Light sensitivity
Importance
- Requires urgent evaluation
- Can threaten vision
- May cause permanent scarring
Infectious Keratitis
Chronic corneal irritation from entropion can increase the risk of infection, especially when the corneal surface is damaged.
Bacterial Keratitis
May occur after breakdown of the corneal protective barrier.
Risk Factors
- Corneal abrasions
- Ocular surface disease
- Delayed treatment
Prevention
Early correction of eyelid malposition helps protect the cornea.
Chronic Ocular Surface Disease
Long-standing entropion can disrupt normal blinking and tear distribution, leading to chronic ocular surface problems.
Dry Eye Symptoms
Patients may experience burning, fluctuating vision, and irritation.
Tear Film Disruption
Abnormal eyelid position affects tear spreading across the cornea.
Inflammation
Repeated mechanical irritation may create chronic inflammation.
Vision Loss From Severe Entropion
Permanent vision loss is uncommon but may occur when chronic corneal damage is left untreated.
Possible Causes
- Corneal ulceration
- Corneal scarring
- Severe infection
- Delayed treatment
Prevention
- Early diagnosis
- Protect the cornea
- Correct eyelid position
- Regular follow-up
Prognosis
The prognosis of entropion is generally excellent when diagnosed and treated appropriately.
Early Treatment
Most patients experience relief of irritation and protection of the ocular surface.
Surgical Outcomes
Most surgical procedures successfully restore eyelid position and reduce symptoms.
Long-Term Monitoring
Follow-up helps detect recurrence or associated ocular surface problems.
Clinical Pearls
- Entropion is an inward rotation of the eyelid margin causing lash contact with the eye.
- The most common type is involutional entropion caused by aging changes.
- Always evaluate the cornea because chronic lash rubbing can cause damage.
- Differentiate entropion from trichiasis, where lashes are misdirected without eyelid rotation.
- Sudden painful symptoms may indicate corneal involvement.
- Lubrication protects the ocular surface but does not correct structural entropion.
- Surgery is usually required for persistent eyelid malposition.
Common ICD-10 Codes
| Code | Description |
|---|---|
| H02.03 | Entropion of eyelid |
| H02.032 | Entropion of right lower eyelid |
| H02.035 | Entropion of left lower eyelid |
| H16.00 | Corneal ulcer, unspecified |
| S05.0 | Injury of conjunctiva and corneal abrasion |
Patient Education: Protecting Your Eyes With Entropion
Do Not Rub Your Eyes
Eye rubbing can worsen irritation and increase corneal injury risk.
Use Lubrication
Artificial tears and ointments may improve comfort.
Seek Care Early
Pain, vision changes, or worsening redness require evaluation.
Attend Follow-Up
Monitoring helps prevent long-term complications.
Frequently Asked Questions
What causes entropion?
The most common cause is aging-related eyelid laxity. Other causes include scarring, trauma, and congenital abnormalities.
Is entropion dangerous?
It can become serious if eyelashes repeatedly damage the cornea.
Can entropion go away on its own?
Some temporary inflammatory cases may improve, but structural entropion usually requires treatment.
How is entropion treated?
Treatment may include lubrication, temporary measures, or surgical correction to restore eyelid position.
Can entropion cause blindness?
Severe untreated cases can cause corneal scarring and vision loss, although this is uncommon.
Related Eye Conditions
Ectropion
Outward turning of the eyelid causing exposure and tearing.
Trichiasis
Misaligned eyelashes rubbing against the ocular surface.
Distichiasis
Extra eyelashes that may irritate the eye.
Blepharitis
Chronic eyelid inflammation associated with irritation.
Dry Eye Disease
Tear film disorder that may worsen symptoms.
Corneal Abrasion
Damage to the corneal surface caused by trauma or irritation.
Medical Disclaimer
The information provided by Kardia Vision is intended for educational purposes only and should not replace professional medical advice, diagnosis, or treatment.
Eye pain, sudden vision changes, severe redness, or signs of corneal injury require evaluation by an eye care professional.
Kardia Vision is dedicated to providing accurate, evidence-based eye health education for patients, students, and healthcare professionals.