[Distinctive Wessely immune ring in keratitis-a chameleon]

Area of Science:

• Ophthalmology
• Corneal diseases
• Immunology

Background:

• The Wessely immune ring is a diagnostic sign observed in various corneal conditions, both infectious and non-infectious.
• Its presence can suggest specific pathologies but is not pathognomonic, necessitating careful interpretation.
• Accurate diagnosis relies on integrating clinical presentation with microbiological findings.

Observation:

• A case report details a 31-year-old contact lens wearer presenting with diffuse endothelial decompensation.
• The patient exhibited a focal, mid-peripheral corneal infiltrate alongside a Wessely immune ring.
• This presentation posed a diagnostic challenge due to the ambiguous nature of the immune ring.

Findings:

• The Wessely immune ring, while a useful sign, can be misleading in corneal diagnoses.
• Differential diagnosis requires a holistic approach, considering all clinical and microbiological evidence.
• Contact lens wear is a significant risk factor for microbial keratitis and other corneal complications.

Implications:

• This case underscores the importance of a thorough diagnostic workup for corneal infiltrates, especially in contact lens wearers.
• Understanding the differential diagnostic utility and limitations of the Wessely immune ring is crucial for effective patient management.
• Appropriate treatment strategies must be tailored based on confirmed diagnoses to prevent vision loss.