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Corneal Abrasion Treatment & Management

  • Author: Arun Verma, MD; Chief Editor: Hampton Roy, Sr, MD  more...
 
Updated: Dec 01, 2015
 

Approach Considerations

Corneal abrasions heal with time. Prophylactic topical antibiotics are given in patients with abrasions from contact lenses. Traditionally, topical antibiotics were used for prophylaxis even in noninfected corneal abrasions not related to contact lenses, but this practice has been called into question.

Patching the eye has been used to help relieve the pain associated with corneal abrasion, but research has not shown benefit from patching.[20, 21, 22] Patching should not be performed in patients at high risk of infection, such as those who wear contact lenses and those with trauma caused by vegetable matter, because of potential incubation of infecting organisms and promoting subsequent infectious keratitis.

Some ophthalmologists advocate the use of diclofenac (Voltaren) or ketorolac (Acular) drops with a disposable soft contact lens in addition to antibiotic drops.[23, 24, 25] This therapy may be an effective alternative to patching, as it allows the patient to maintain binocular vision during treatment and reduces inflammation.

Patients with all but the most minor abrasions usually require a strong oral narcotic analgesic initially. In addition, topical cycloplegics may be required to relieve pain and photophobia in patients with large abrasions until their healing is nearly complete.

Emergent ophthalmologic consultation is warranted for suspected retained intraocular foreign bodies. Urgent consultation is needed for suspected corneal ulcerations (microbial keratitis).

Treatment considerations

Determining the best treatment for a corneal abrasion depends on many factors, such as the severity of the injury and the degree of pain the patient is experiencing. But practitioners also must take into consideration the location of the abrasion, symptoms the patient may be exhibiting, and how the incident occurred. Was it simply a scratch or a shearing injury that tore the epithelium away from the underlying basement membrane? Was it caused by a plant-type material, a situation in which a later fungal infection may be possible?

The level of pain also figures into the treatment plan. Moreover, pain affects everyone differently, so pain management must be tailored to each individual. Two patients with essentially identical wounds or injuries may describe the pain level very differently. It is important to understand that pain is individual. When attempting to manage pain associated with corneal abrasion, the pain management approach must be based on the patient’s pain rather than the patient’s injury.

Any symptoms that a patient may display also helps decide the course of treatment. If the patient is experiencing significant sensitivity to light or excessive lacrimation, he or she should be treated differently from someone who has a small abrasion with minor symptoms. It also depends on the location of the injury. If it is central, the treatment plan should be more aggressive than if the injury is peripheral.

As the demand for refractive surgery grows, practitioners are more likely to see different types of corneal abrasions stemming from a surgical procedure.

Refractive surgery has reawakened the interest in treating corneal abrasions because many postrefractive surgery patients develop some mild degree of what would be considered an abrasion. Photorefractive keratectomy can cause a fairly substantial epithelial defect, which clearly goes beyond just an abrasion. In laser in situ keratomileusis, although there is not a massive area of open abrasion, there are peripheral areas of the cornea where the flap edge may exhibit a circumferential pattern of superficial punctate keratitis adjacent to the microkeratome cut. Many ophthalmologists have reacquainted themselves with this, in terms of refractive surgery offering unusual created abrasions that do not always completely heal.

Preventing recurrent erosion

While monitoring the cornea for signs that the tissue is healing, a bland lubricating ointment for 6-8 weeks to reduce the potential for recurrent erosion or a hypertonic ointment, depending on the appearance of the cornea, should be considered.

Hyperosmotic agent ointment (sodium chloride 5%) every night, in addition to a daily hypertonic drop, for 60 days should be considered.

If recurrent erosion can be prevented, the patient has been well served. Recurrent erosion can become a lifelong problem. Many patients with recurrent erosion eventually require laser procedures or corneal stromal micropuncture.

Unresolved corneal erosions present a challenge in terms of treatment.

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Infection Prevention

Routine use of topical antibiotics for corneal abrasions remains controversial. Many emergency physicians have stopped using these agents for minor injuries, though others still treat corneal abrasions with broad-spectrum antibiotic ointments for lubrication and infection prophylaxis. Antibiotic use persists despite its unproved effectiveness and despite evidence that ointments may retard corneal epithelial healing.

Although use of prophylactic antibiotics after trauma or surgery is sometimes discouraged in general medicine, ophthalmologists use topical antibiotics for corneal abrasions because de-epithelialized cornea is more susceptible than intact cornea to infection, especially if the eye is patched. The injured cornea is vulnerable not only to pathogens contaminating any foreign body that produced the abrasion but also to potential pathogens present in the normal conjunctival flora.

Antibiotics should be continued until the patient is asymptomatic.

To the authors' knowledge, no randomized double-blind placebo-controlled trials have been conducted to evaluate the advantage of prophylactic antibiotics for noninfected corneal abrasions. Because the incidence of microbial keratitis in this setting is low, such a study is unlikely. The estimated annual incidence of ulcerative keratitis is 0.13-0.21% for people who wear extended-wear soft contact lenses and 0.02-0.04% for those using daily-wear soft contact lenses.

Fluoroquinolones (eg, ofloxacin) are probably the most common agents used for prophylaxis with corneal abrasions because of their broad-spectrum coverage and low toxicity and because of the low resistance of commonly acquired organisms to these drugs. In addition, fluoroquinolones have proven efficacy in the treatment of bacterial corneal ulcers. Prolonged and low-frequency dosing should be avoided to discourage the emergence of resistant organisms due to subinhibitory antibiotic concentrations on the ocular surface.

Ofloxacin has effectiveness similar to that of tobramycin for external ocular infection, fortified cefazolin and tobramycin for bacterial keratitis, and fortified gentamicin and cefuroxime for microbial keratitis. Trimethoprim also provides good broad-spectrum coverage and is an excellent prophylactic agent. A combination drop of polymyxin and trimethoprim is commercially available.

For large or dirty abrasions, many practitioners prescribe broad-spectrum antibiotic drops, such as trimethoprim/polymyxin B (Polytrim) or sulfacetamide sodium (Sulamyd, Bleph-10), which are inexpensive and least likely to cause complications. Alternatives are an aminoglycoside or a fluoroquinolone.

Abrasions due to contact lenses warrant antibiotic treatment because of their propensity to become infected corneal ulcers. Coverage for gram-negative organisms (especially Pseudomonas species) with agents such as gentamicin (Garamycin), tobramycin (Tobrex), norfloxacin (Chibroxin), or ciprofloxacin (Ciloxan) is recommended.

Antibiotic drops are more comfortable than ointments but must be administered every 2-3 hours. Antibiotic ointments (eg, bacitracin, polymyxin/bacitracin, erythromycin, ciprofloxacin) retain their antibacterial effect longer than drops and thus can be used less often (every 4-6 h), but they are more uncomfortable because they can cause visual blurring. Ointments are frequently used in children whose crying washes out the drops.

For topical use, the sterile powder is reconstituted by adding 20-50 mL of sterile water for injection or 0.9% sodium chloride solution for injection to a vial containing polymyxin 500,000 U. This mixture creates a solution with a polymyxin concentration of approximately 10,000-25,000 U/mL (10,000 U = 1 mg).

Avoid antibiotics containing neomycin (eg, Neosporin) because of the high incidence of allergy to neomycin in the general population. The use of prophylactic periocular injections or systemic administration of antibiotics after corneal abrasions is controversial.

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Pain Relief

The pain of corneal abrasions may be severe and should be treated with nonsteroidal anti-inflammatory drops and, if necessary, a soft bandage contact lens. Narcotic analgesia is occasionally required on a short-term basis. These are continued until the pain decreases to the point that it can be managed with over-the-counter analgesics.

Instillation of a long-acting cycloplegic agent can provide significant relief for patients with marked photophobia and blepharospasm. These agents relax any ciliary muscle spasm that may cause a deep, aching pain and photophobia. Cycloplegic agents are mydriatics; therefore, to prevent an episode of acute angle closure glaucoma, ensure that the patient does not have narrow-angle glaucoma.

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Management of Small Corneal Abrasions

Small abrasions can be managed on an outpatient basis. Ice compresses should be used for 24-48 hours to reduce edema. Warm compresses can be used thereafter.

Inform patients about the signs of wound infection, including increasing pain, erythema, edema, and purulent discharge. This helps in making the decision for early antibiotic intervention.

Patients must be informed about the signs and symptoms of complications, such as foreign body sensation, conjunctival injection, and decreased vision, so that treatment can be initiated promptly.

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Patching

Flynn et al conducted meta-analysis of several studies of patching for corneal abrasions.[26] Six groups had evaluated pain; 4 found no difference, whereas 2 favored not patching. Complication rates did not differ between use and no use of patches.

Flynn et al noted, "Eye patching was not found to improve healing rates or reduce pain in patients with corneal abrasions. Given the theoretical harm of loss of binocular vision and possible increased pain, the route of harmless nonintervention in treating corneal abrasions is recommended."[26]

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Therapeutic Lenses

Although the use of slowly dissolving lenses made of porcine collagen is an excellent concept, this treatment is not widely used. A therapeutic lens that dissolves after 1-3 days is appealing, but most clinical indications require use of the lens for more than 3 days. An exception might be an uncomplicated corneal abrasion in which a collagen lens could be an alternative to a pressure dressing.

One study showed that, with common corneal abrasions, collagen lenses resulted in unexpected discomfort rather than decreased symptoms. In most applications, collagen lenses have failed to find acceptance because of their expense, induced discomfort, difficulty in handling, and lack of optical clarity. Furthermore, the lenses must be constantly replaced in applications in which more than 3 days of wear is required.

Another study demonstrated that collagen lenses were not helpful in healing persistent epithelial defects after penetrating keratoplasty.[27]

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Prevention of Corneal Abrasion

Persons who work in high-risk occupations such as auto mechanics, metalworkers, or miners should wear protective eyewear. People who participate in contact sports such as hockey, lacrosse, or racquet sports such as squash or racquetball should always wear protective eyewear. Eye protection is also important for patients whose work or recreation increase the risk of corneal abrasion or ultraviolet light exposure (eg, farming, hiking through areas of tall foliage, skiing).

To prevent corneal abrasion in patients who are unconscious or who cannot voluntarily close their eyelids (eg, because of Bell palsy or other neuropathies), tape the eyelids closed.

Patients who wear contact lenses should make sure they fit properly and change them accordingly.

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Follow-Up Care

Close follow-up care of corneal abrasions is necessary because of the danger of the abrasion progressing to an ulcer. Essentially all corneal ulcers begin with an abrasion. Abrasions resulting from vegetable matter are at high risk for fungal ulcers. Abrasions resulting from contact lens wear should be monitored for Pseudomonas infection and amebic keratitis.

Patients with abrasions should receive follow-up care until healing is complete and the fluorescein stain is negative, to confirm that a corneal ulcer has not developed. However, minor abrasions should heal within 24-48 hours and do not require follow-up if the patient is completely asymptomatic at 48 hours. Reexamine large abrasions frequently until reepithelialization occurs and the potential for infection no longer exists.

Advise eye rest (ie, no reading or work that requires substantial eye movement that might interfere with reepithelialization). Advise patients to avoid bright light or to wear sunglasses for comfort if they have notable photophobia.

Patient with corneal abrasions that do not resolve with the use of routine prophylactic antibiotics must be evaluated for conditions that impede healing; examples are infection, neurotrophic keratopathy, and topical anesthetic abuse.

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Contributor Information and Disclosures
Author

Arun Verma, MD Senior Consultant, Department of Ophthalmology, Dr Daljit Singh Eye Hospital, India

Disclosure: Nothing to disclose.

Coauthor(s)

Feras H Khan, MD Clinical Assistant Professor, Department of Emergency Medicine, University of Maryland School of Medicine; Attending Physician, Department of Emergency Medicine, Laurel Regional Hospital, University of Maryland Emergency Medicine Network Physicians; Attending Physician, Intensivist, Department of Critical Care Medicine, Mercy Medical Center

Disclosure: Nothing to disclose.

Chief Editor

Hampton Roy, Sr, MD Associate Clinical Professor, Department of Ophthalmology, University of Arkansas for Medical Sciences

Hampton Roy, Sr, MD is a member of the following medical societies: American Academy of Ophthalmology, American College of Surgeons, Pan-American Association of Ophthalmology

Disclosure: Nothing to disclose.

Acknowledgements

Kilbourn Gordon III, MD, FACEP Urgent Care Physician

Kilbourn Gordon III, MD, FACEP is a member of the following medical societies: American Academy of Ophthalmology and Wilderness Medical Society

Disclosure: Nothing to disclose.

Christopher J Rapuano, MD Professor, Department of Ophthalmology, Jefferson Medical College of Thomas Jefferson University; Director of the Cornea Service, Co-Director of Refractive Surgery Department, Wills Eye Institute

Christopher J Rapuano, MD is a member of the following medical societies: American Academy of Ophthalmology, American Society of Cataract and Refractive Surgery, Contact Lens Association of Ophthalmologists, Cornea Society, Eye Bank Association of America, International Society of Refractive Surgery, and Pan-American Association of Ophthalmology

Disclosure: Allergan Honoraria Speaking and teaching; Allergan Consulting fee Consulting; Alcon Honoraria Speaking and teaching; Inspire Honoraria Speaking and teaching; RPS Ownership interest Other; Vistakon Honoraria Speaking and teaching; EyeGate Pharma Consulting; Inspire Consulting fee Consulting; Bausch & Lomb Honoraria Speaking and teaching; Bausch & Lomb Consulting fee Consulting

Francisco Talavera, PharmD, PhD Adjunct Assistant Professor, University of Nebraska Medical Center College of Pharmacy; Editor-in-Chief, Medscape Drug Reference

Disclosure: Medscape Salary Employment

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This corneal abrasion appears as a yellow-green area when stained with fluorescein and viewed with a blue light.
Corneal abrasion.
Corneal abrasion.
Corneal keratitis and staining.
Corneal foreign body.
Corneal foreign body after removal.
Corneal foreign body with cobalt blue lighting showing abrasion.
 
 
 
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