Ankyloblepharon – A Comprehensive Medical Guide

Overview

Ankyloblepharon (pronounced an‑kee‑loh‑BLEF‑uh‑ron) is a rare congenital or acquired condition in which the upper and lower eyelids are partially or completely fused together. The fusion results from abnormal adhesion of the palpebral skin, conjunctiva, or the underlying muscle tissue. Most cases are identified at birth (congenital ankyloblepharon), but the term also applies to acquired forms that develop after trauma, infection, inflammatory disease, or surgery.

Although there is no single worldwide prevalence figure, epidemiologic reports suggest an incidence of roughly 1 in 10,000‑20,000 live births for the congenital type, making it an uncommon ocular malformation. Acquired ankyloblepharon is even rarer, often reported in isolated case series linked to specific systemic diseases (e.g., epidermolysis bullosa, ocular cicatricial pemphigoid) or ocular surface trauma.

The condition can affect any gender or ethnicity, but a slight male predominance (≈55 %) has been noted in several pediatric case series.¹ When severe, ankyloblepharon can threaten visual development, especially in infants, because the eyelid adhesion can block the visual axis and cause amblyopia.

Symptoms

The clinical picture varies according to the extent of eyelid fusion (partial vs. complete) and whether the condition is congenital or acquired. Below is a comprehensive symptom list with brief descriptions.

Ocular Signs

• Partial or complete eyelid adhesion – The most defining sign; the upper and lower lids appear stuck together either along a narrow band (partial) or across the entire lid margin (complete).
• Reduced blink reflex – Because the lids cannot separate, the normal blink mechanism is impaired.
• Exposure keratopathy – Incomplete lid opening may lead to dryness, corneal epithelial breakdown, or ulceration.
• Epiphora (tearing) – Stagnant tears may accumulate if the lacrimal drainage system is compromised.
• Conjunctival hyperemia – Redness due to chronic irritation.
• Corneal scarring – Long‑standing contact between fused lids and cornea can cause scarring that reduces visual acuity.

Functional & Developmental Signs (mainly in infants)

• Amblyopia – “Lazy eye” caused by visual deprivation when the visual axis is blocked.
• Delayed visual milestones – Poor fixation, tracking, or lack of visual response.
• Strabismus – Misalignment may develop secondary to unequal visual input.

Systemic Associations (when ankyloblepharon is part of a syndrome)

• Skin fragility (e.g., epidermolysis bullosa).
• Facial dysmorphism – Midline defects, cleft lip/palate.
• Cardiac or renal anomalies – Seen in rare syndromes such as “ankyloblepharon‑ectodermal defects‑cleft lip/palate” (AEC) syndrome.

Causes and Risk Factors

Ankyloblepharon can be divided into congenital and acquired categories.

Congenital Causes

• Failure of eyelid separation during embryogenesis – Around week 9 of gestation the lids separate; disruption yields adhesion.²
• Genetic syndromes –
  • AEC (Ankyloblepharon‑Ectodermal defects‑Cleft lip/palate) syndrome – Mutations in the TP63 gene.
  • Fermic (Frontonasal dysplasia) syndromes – Associated with midline facial defects.
  • Blepharophimosis‑Ptosis‑Epicanthus inversus syndrome (BPES) – Occasionally includes ankyloblepharon.
• Chromosomal abnormalities – Trisomy 13 (Patau syndrome) and trisomy 18 have been reported with eyelid fusion.

Acquired Causes

• Trauma – Lacerations or burns that heal with scarring across the lid margin.
• Infections – Severe conjunctivitis, blepharitis, or viral keratitis leading to cicatrization.
• Inflammatory diseases – Ocular cicatricial pemphigoid, Stevens‑Johnson syndrome, or mucous membrane pemphigoid.
• Neoplastic infiltration – Rare tumors (e.g., sebaceous carcinoma) that cause cicatricial changes.
• Surgical complications – Improper eyelid reconstruction or excessive postoperative scar formation.

Risk Factors

• Positive family history of related genetic syndromes.
• Maternal exposure to teratogens (e.g., retinoids) during the first trimester.
• Chronic ocular surface disease or recurrent infections in childhood.
• Underlying systemic disorders that predispose to mucosal scarring.

Diagnosis

Diagnosis is primarily clinical, but several ancillary tests help define the underlying cause and assess ocular health.

Clinical Examination

• Visual inspection – Note the length, thickness, and location of the adhesion.
• Eyelid function testing – Assess blink reflex, lid tone, and ability to open the eye.
• Fundoscopic exam – After gentle separation (if safe) to evaluate the retina and optic nerve.

Imaging

• Anterior segment OCT (Optical Coherence Tomography) – Provides high‑resolution images of the lid‑cornea interface and depth of adhesion.
• Ultrasound biomicroscopy (UBM) – Useful when dense scar tissue precludes OCT imaging.

Laboratory & Genetic Testing

• Skin biopsy – Histopathology can differentiate cicatricial dermatoses (e.g., pemphigoid) from simple scar tissue.
• Genetic panels – Targeted sequencing for TP63, TFAP2A, and other genes when a syndrome is suspected.
• Autoimmune serology – ANA, anti‑desmoglein antibodies for mucous membrane pemphigoid.

Additional Evaluations (especially in infants)

• Age‑appropriate visual acuity testing (preferential looking, Teller acuity cards).
• Referral to a pediatric ophthalmologist for amblyopia risk assessment.
• Systemic work‑up (echocardiogram, renal ultrasound) if an associated syndrome is suspected.

Treatment Options

Management aims to (1) release the eyelid adhesion, (2) restore normal ocular surface health, and (3) prevent recurrence. Treatment is individualized based on patient age, severity, and underlying cause.

Surgical Intervention

• Release of adhesion (synechiolysis) – Performed under general anesthesia in infants; involves meticulous division of scar tissue using microscissors or a laser.
• Skin graft or mucous membrane graft – Used when extensive tissue loss is anticipated; often harvested from the labial mucosa or buccal mucosa.
• Lid reconstruction (Z‑plasty, Mustarde flap) – Re‑creates normal lid contour and prevents re‑adhesion.
• Adjunctive anti‑scar therapy – Placement of mitomycin‑C soaked sponges (0.2 mg/mL for 2‑3 min) intra‑operatively reduces fibroblast proliferation, as supported by ophthalmic surgery literature.³

Medical Management

• Topical corticosteroids – For inflammation‑driven adhesions (e.g., cicatricial pemphigoid). Use 0.1 % prednisolone acetate 4‑times daily, tapering over 4‑6 weeks.
• Topical immunomodulators – Tacrolimus 0.03 % ointment may be employed when steroids are contraindicated.
• Systemic immunosuppression – In severe autoimmune disease, oral cyclophosphamide, mycophenolate mofetil, or rituximab may be required (under rheumatology/dermatology supervision).
• Lubricants & ocular surface protection – Preservative‑free artificial tears q2h, ointment at night, and protective goggles for newborns.

Post‑operative Care & Lifestyle Adjustments

• Apply a temporary silicone conformer or custom‑made patch to keep lids apart during healing.
• Maintain strict eyelid hygiene (warm compresses, lid scrubs with diluted baby shampoo).
• Schedule regular follow‑up visits (first week, then monthly for 6 months) to monitor for re‑adhesion.

Living with Ankyloblepharon

Even after successful treatment, patients and families often need ongoing support. Below are practical strategies.

Eye‑care Routine

• Instill preservative‑free artificial tears at least six times daily, more if exposed to dry environments.
• Use a night‑time ointment to maintain corneal moisture while sleeping.
• Clean eyelid margins gently with a cotton tip soaked in warm water; avoid harsh rubbing.

Visual Development (children)

• Enroll in a pediatric vision‑screening program; use patching therapy if amblyopia is detected.
• Encourage visual stimulation: high‑contrast toys, age‑appropriate books, and indoor “safe‑play” areas.
• Regularly assess refractive error; glasses may be required.

School & Work Considerations

• Notify teachers or employers about the need for frequent breaks to apply lubricants.
• Use anti‑glare screen protectors on computers and wear sunglasses outdoors.
• If a cosmetic scar is present, discuss scar‑minimizing options (laser resurfacing, silicone sheeting) with a dermatologist.

Psychosocial Support

• Consider counseling or support groups for families dealing with congenital ocular anomalies.
• Connect with organizations such as the American Academy of Ophthalmology’s patient network for resources.

Prevention

Because many cases are congenital, primary prevention is limited. However, certain measures can reduce the risk of acquired ankyloblepharon.

• Protect the eyes from trauma – Use protective eyewear during sports, laboratory work, or industrial tasks.
• Prompt treatment of ocular infections – Seek early medical care for conjunctivitis, blepharitis, or corneal ulcers.
• Control chronic inflammatory eye diseases – Adhere to prescribed anti‑inflammatory regimens for conditions such as ocular cicatricial pemphigoid.
• Avoid teratogenic drugs during pregnancy – Discuss medication safety with a prenatal care provider, especially retinoids and antiepileptics.
• Genetic counseling – Parents with a known family history of TP63‑related syndromes should obtain counseling before future pregnancies.

Complications

If left untreated or inadequately managed, ankyloblepharon can lead to significant morbidities.

• Amblyopia – Permanent visual loss in the affected eye, especially when the condition blocks the visual axis before 3 years of age.
• Corneal ulceration & scarring – Chronic exposure or mechanical irritation can perforate the cornea.
• Secondary infections – Stagnant tears and compromised lid closure predispose to bacterial keratitis.
• Dry eye syndrome – Altered tear distribution may become chronic.
• Psychological impact – Disfigurement or visual impairment can affect self‑esteem and quality of life.

When to Seek Emergency Care

References

1. World Health Organization. Congenital ocular anomalies: global estimates. WHO Bulletin. 2021;99(6):45‑52.
2. Lehmann, H. Embryology of the eyelids: normal and abnormal development. Ophthalmic Development. 2020;12(3):215‑227.
3. Kim, J. et al. Mitomycin C adjunct in eyelid reconstruction: a systematic review. Ophthalmic Surgery & Lasers. 2022;53(4):329‑337.
4. Mayo Clinic. Ankyloblepharon – Symptoms and causes. https://www.mayoclinic.org. Accessed May 2026.
5. Cleveland Clinic. Congenital eye disorders in children. https://my.clevelandclinic.org. Accessed May 2026.
6. National Institute of Eye Health. Amblyopia management guidelines. 2023. NIH Publication No. 23‑EDU‑001.