Corneal Abrasion & Recurrent Erosion Syndrome

Overview

Corneal abrasion — a traumatic defect of the corneal epithelium — is one of the most common ocular injuries presenting to emergency and urgent care settings.¹ Most abrasions heal uneventfully within 24–72 hours with supportive care, but a subset of patients, particularly after fingernail, tree branch, or paper-cut-type injuries, go on to develop recurrent corneal erosion syndrome (RCES), a chronic condition in which the healed epithelium repeatedly breaks down.²

Epidemiology & Risk Factors

Corneal abrasions occur across all ages, commonly from fingernail trauma (frequently from another person, such as a child or partner), foreign bodies, contact lens mishandling, plant/branch injuries, and mechanical/occupational trauma.² In one case series, adults scratched by another adult were significantly more likely to develop complications such as RCES compared with other abrasion mechanisms.² Pre-existing epithelial basement membrane dystrophy (map-dot-fingerprint dystrophy) is a major risk factor for RCES independent of trauma.

Pathophysiology

Normal corneal epithelium adheres to the underlying basement membrane via hemidesmosomes and anchoring fibrils; abrasions disrupt this attachment complex. While the epithelial surface itself typically re-epithelializes within 24–72 hours, durable reformation of hemidesmosomal attachments can take considerably longer (weeks to months). If the epithelium heals with abnormal or incomplete adhesion — as is common after certain injury types (fingernail, paper-cut) or in patients with underlying basement membrane dystrophy — the fragile epithelium can shear off again, typically overnight when the lids are closed and the epithelium can adhere to the tarsal conjunctiva, then tear away on eye opening/blinking upon waking. This is the mechanism of RCES.

Clinical Presentation

Acute corneal abrasion: sudden eye pain, foreign-body sensation, photophobia, tearing, and blepharospasm, typically with a clear history of trauma.

Recurrent corneal erosion syndrome: episodic attacks — classically on waking, or with eye-opening after sleep — of sudden sharp pain, tearing, redness, and blurred vision, sometimes with a preceding remote history of corneal abrasion (often months to years prior) or known epithelial basement membrane dystrophy. Episodes may range from mild discomfort to severe pain lasting hours.

Exam Findings

• Acute abrasion: epithelial defect staining with fluorescein under cobalt blue light, with well-demarcated edges
• RCES (during an active episode): loose, redundant, or absent epithelium at the site, often with a "negative staining" pattern at the leading edge of a healing defect
• RCES (between episodes): may show subtle epithelial irregularity, microcysts, or map-dot-fingerprint changes on retroillumination; exam can also be entirely normal between attacks

Differential Diagnosis

• Recurrent erosion versus new/unrelated traumatic abrasion
• Herpes simplex keratitis (dendritic staining pattern, decreased corneal sensation)
• Foreign body (subtarsal foreign body should always be excluded with lid eversion)
• Contact lens-related keratitis or corneal hypoxia
• Neurotrophic keratopathy (decreased sensation, poor healing)
• Epithelial basement membrane dystrophy without prior trauma

Management

Management of acute corneal abrasion is largely supportive: topical antibiotic ointment or drops (broad-spectrum, with specific coverage considerations for contact-lens wearers given Pseudomonas risk), cycloplegia for comfort if significant photophobia/ciliary spasm, and oral analgesia as needed.¹ Practice patterns for follow-up vary; many patients heal without needing ophthalmology involvement, though referral is reasonable for larger or complicated abrasions.¹ Routine prophylactic patching is generally not recommended, as it does not clearly accelerate healing and can worsen discomfort or mask complications. Bandage contact lenses are sometimes used for comfort in select cases.¹

For RCES, management is stepped:

1. During an acute episode: lubrication, bandage contact lens, or brief patching for comfort
2. Prophylaxis against recurrence: nightly lubricating ointment and/or hypertonic saline (sodium chloride 5%) drops/ointment, which was the most common practice change made by ophthalmology in one series of referred abrasion patients¹
3. For frequent or refractory recurrences: epithelial debridement, anterior stromal micropuncture, diamond burr polishing of Bowman's layer, or phototherapeutic keratectomy (PTK) to promote durable epithelial adhesion

Complications

• Secondary microbial keratitis if the epithelial defect becomes infected
• Chronic pain and recurrent time off work/school from unresolved RCES
• Corneal scarring with recurrent or poorly managed erosions
• Rarely, sterile corneal ulceration from prolonged epithelial breakdown

Clinical Pearls

• Always evert the eyelid to exclude a retained subtarsal foreign body in any patient with a corneal abrasion
• Fingernail-induced abrasions (especially from another adult) carry a higher risk of RCES than many other mechanisms²
• Hypertonic saline is a simple, common first-line prophylactic measure for RCES and was the most frequent management change in one referral series¹
• A patient with recurring sharp eye pain specifically on waking should be evaluated for RCES even without a clear recent trauma history
• Routine patching is not clearly beneficial for simple abrasions and may worsen comfort

Common Pitfalls

• Forgetting to evert the lid to look for a subtarsal foreign body
• Missing a dendritic pattern and treating herpes simplex keratitis as a simple abrasion
• Using topical anesthetic drops for ongoing patient-administered pain control, which impairs healing and masks worsening disease
• Overlooking a remote abrasion history in a patient presenting with recurrent morning eye pain
• Assuming all corneal abrasions require ophthalmology referral, when most heal well with primary/urgent care management alone¹