H16.24 Ophthalmia nodosa

Name of the Condition

• Ophthalmia nodosa

Summary

Ophthalmia nodosa is an inflammatory condition of the eye caused by the presence of foreign bodies, typically insect parts or plant material, embedded in the ocular tissues. It may result in redness, irritation, and potential tissue damage if not addressed. Prompt evaluation is important to identify and remove the foreign material and prevent complications.

Causes

The condition is caused by the introduction of foreign bodies, such as insect hairs, setae, or plant fragments, into the eye. These materials can penetrate the conjunctiva or cornea, triggering an inflammatory response. Exposure to environments with insects or plants that have irritating structures increases the risk of this condition.

Risk Factors

• Occupational or recreational exposure to insects or plants with irritating parts.
• Lack of protective eyewear in environments with potential foreign body hazards.
• Activities involving close contact with vegetation or insect colonies.

Symptoms

• Redness and swelling of the eye.
• Itching, burning, or gritty sensation.
• Excessive tearing or discharge.
• Sensitivity to light.
• Feeling of a foreign body in the eye.
• Possible visible or palpable foreign material in the eye.

Diagnosis

Diagnosis involves a comprehensive eye exam, including slit-lamp microscopy to identify foreign material. Fluorescein staining may be used to assess corneal involvement. In some cases, removal of the foreign body under magnification or anesthesia is necessary for confirmation and treatment.

Treatment Options

Treatment focuses on removing the foreign body, often with fine forceps or irrigation. Topical antibiotics may be prescribed to prevent infection, and anti-inflammatory drops can reduce irritation. Pain management and follow-up to ensure complete removal and healing are standard.

Prognosis and Follow-Up

Prognosis is generally good with timely removal of the foreign body and appropriate treatment. Most cases resolve without long-term damage, but delayed removal may lead to persistent inflammation or scarring. Follow-up appointments may be needed to monitor healing and address any complications.

Complications

• Corneal abrasions or ulcers from retained foreign material.
• Secondary bacterial or fungal infections.
• Persistent inflammation or granuloma formation.
• Vision changes if the cornea or deeper structures are involved.

Lifestyle & Prevention

• Wear protective eyewear in environments with potential foreign body hazards.
• Avoid rubbing the eyes after exposure to insects or plants.
• Clean the eye area gently if irritation occurs, and seek prompt evaluation if symptoms persist.

When to Seek Professional Help

Seek medical attention if you experience persistent eye redness, pain, or a sensation of a foreign body, especially after exposure to insects or plants. Immediate evaluation is recommended if vision changes or severe discomfort occur.

Tips for Medical Coders

Document the presence of foreign material (e.g., insect parts, plant fragments) and any associated inflammation. Include details about the location (e.g., conjunctiva, cornea) and whether removal was performed. Ensure clinical correlation with the diagnosis of ophthalmia nodosa.