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Friction Keratopathy (Corneal Abrasion)

Overview

Friction keratopathy, more commonly known as a corneal abrasion, is a superficial injury to the clear front surface of the eye—the cornea. The abrasion results from a mechanical scrape that removes the outermost layer of corneal epithelial cells.

While anyone can develop a corneal abrasion, it is most frequent among:

• Children and teenagers (accidental rubbing or sport‑related injuries)
• Contact‑lens wearers
• People who work in dusty or windy environments (construction, farming, landscaping)
• Adults with ocular surface dryness or underlying ocular disease

Worldwide, corneal abrasions account for approximately 10–15% of all emergency‑room eye visits (CDC, 2022). In the United States, an estimated 1.5 million adults seek medical care for a corneal abrasion each year.<sup>[1]</sup>

Symptoms

Symptoms can appear within seconds to minutes after the injury and typically include:

• Sharp, tearing pain – a feeling as if something is “stuck” in the eye.
• Foreign‑body sensation – persistent urge to rub the eye.
• Redness (conjunctival injection) – due to irritation of surrounding tissues.
• Excessive tearing (epiphora) – reflex tearing to protect the eye.
• Photophobia – increased sensitivity to light.
• Blurred or decreased vision – usually temporary, improves as the epithelium heals.
• Visible defect – a grayish or white spot may be seen on the cornea during an eye exam.
• Swelling of the eyelid – less common but may accompany significant irritation.

Because symptoms overlap with other ocular conditions (e.g., corneal ulcer, acute glaucoma), professional evaluation is essential.

Causes and Risk Factors

Direct Mechanical Trauma

• Finger or fingernail rubbing
• Contact lens insertion/removal mishaps
• Foreign bodies (dust, sand, metal shards)
• Sports injuries (basketball, racquet sports, martial arts)
• Accidental impact from hands, tools, or eyelash loss (trichiasis)

Environmental and Behavioral Factors

• Dry eye syndrome – reduced tear film makes the epithelium more vulnerable.
• Exposure to wind, smoke, or chemicals
• Improper contact‑lens hygiene (overnight wear, using expired solution)
• Use of eye cosmetics that can trap particles against the cornea.

Underlying Ocular Surface Disease

• Recurrent epithelial erosion (often seen in patients with diabetes or epithelial basement membrane dystrophy)
• Limbal stem‑cell deficiency
• Previous corneal surgery (LASIK, PRK) that may weaken epithelial adhesion.

Diagnosis

Diagnosis is primarily clinical and is completed in a few steps:

1. History Taking

• Onset, mechanism of injury, and associated activities.
• Contact‑lens use, ocular‑surface disease, systemic conditions (diabetes, autoimmune disease).
• Symptoms described above.

2. Visual Acuity Test

Establishes baseline vision and detects any impairment that may need urgent attention.

3. Slit‑Lamp Examination

Using a high‑intensity light and magnifying lens, the clinician inspects the cornea. A fluorescein dye drop is applied, which stains the damaged epithelium bright green under cobalt‑blue light, revealing the size, shape, and depth of the abrasion.

4. Additional Tests (if needed)

• Seidel test – assesses for corneal perforation by observing fluid leakage.
• Pachymetry – measures corneal thickness when deeper injury is suspected.
• Culture of the ocular surface if there is concern for infection (particularly in contact‑lens wearers).

Treatment Options

The goal of treatment is to relieve pain, promote rapid re‑epithelialization, and prevent infection or scarring.

1. Immediate Measures

• Avoid rubbing the eye – further trauma worsens the abrasion.
• Shield the eye – a patch or an eye shield (especially if eyelid blink reflex is strong) reduces mechanical stress.
• Cold compresses – can calm irritation for the first few hours.

2. Pharmacologic Therapy

• Topical antibiotics (e.g., fluoroquinolones such as ciprofloxacin 0.3% drops) – prevent bacterial superinfection, especially in contact‑lens users or when a foreign body was present.<sup>[2]</sup>
• Lubricating eye drops (preservative‑free artificial tears) – keep the ocular surface moist and aid epithelial migration.
• Cycloplegic agents (e.g., homatropine 5%) – lessen ciliary spasm and photophobia in larger abrasions.
• Pain control – oral NSAIDs (ibuprofen 400 mg every 6 h) or, for severe pain, short courses of acetaminophen‑codeine, under physician guidance.

3. Bandage Contact Lens (BCL)

For larger or deeper abrasions, a soft silicone‑hydrogel bandage lens protects the cornea, reduces pain, and creates a moist environment that accelerates healing. BCLs are typically removed after 24‑72 hours once re‑epithelialization is evident.

4. Follow‑up Care

• Re‑examination within 24–48 hours to ensure healing.
• Continuation of antibiotic drops until the epithelium fully closes (usually 3–5 days).
• Discontinue any steroid drops unless prescribed for a specific indication, as steroids can impede healing and raise infection risk.

5. Lifestyle Adjustments During Healing

• Wear sunglasses outdoors to reduce photophobia.
• Avoid contact‑lens wear until the cornea has fully healed (generally 1 week).
• Do not use eye makeup or creams near the affected eye.

Living with Friction Keratopathy (Corneal Abrasion)

Even a minor abrasion can disrupt daily activities. Practical tips for managing symptoms while healing include:

• Eye protection – use a protective shield or patch, especially while sleeping.
• Artificial tears – apply preservative‑free drops every 1–2 hours, especially in dry environments.
• Hydration – adequate fluid intake supports tear production.
• Environment control – use a humidifier in dry indoor settings; avoid smoke, wind, and dust.
• Monitor vision – keep a simple log of visual changes; any worsening warrants prompt review.
• Take breaks from screens – prolonged computer use can exacerbate dry eye and discomfort.
• Medication adherence – complete the full course of prescribed antibiotics even if symptoms improve.

Prevention

Most corneal abrasions are avoidable with simple protective habits:

• Hand hygiene – wash hands thoroughly before touching the eyes or handling lenses.
• Proper contact‑lens care – replace lenses as scheduled, use fresh disinfecting solution, and avoid sleeping in lenses unless specifically approved.
• Protective eyewear – wear safety goggles for sports, construction, gardening, or any activity with airborne particles.
• Avoid rubbing eyes – use lubricating drops if eyes feel gritty.
• Regular eye exams – detect dry eye, blepharitis, or early signs of epithelial dystrophy.
• Manage systemic disease – good glycemic control in diabetes reduces epithelial healing time.

Complications

When left untreated or improperly managed, a corneal abrasion can lead to serious problems:

• Corneal ulcer – bacterial, viral, or fungal invasion of deeper corneal layers.
• Infectious keratitis – especially common in contact‑lens wearers; may threaten vision.
• Scarring (nebular or stromal opacity) – can cause permanent visual distortion.
• Recurrent corneal erosion syndrome – repeated episodes of superficial breakdown.
• Secondary glaucoma – rare, due to inflammation raising intra‑ocular pressure.
• Loss of vision – catastrophic but uncommon; usually follows infection or deep stromal involvement.

When to Seek Emergency Care

References

1. Centers for Disease Control and Prevention. National Center for Injury Prevention and Control. Eye Injuries. 2022. https://www.cdc.gov/visioninjury
2. American Academy of Ophthalmology. Corneal Abrasion (Friction Keratopathy) Treatment Guidelines. 2023. https://www.aao.org/clinical-guidelines
3. Mayo Clinic. Corneal abrasion: Symptoms and causes. Updated 2024. https://www.mayoclinic.org
4. National Eye Institute (NEI). Eye Health: Corneal Abrasion. 2022. https://nei.nih.gov
5. World Health Organization. Global Vision Impairment Statistics. 2023. https://www.who.int

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