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Component-resolved diagnostics in vernal conjunctivitis
Alicia Armentia1, Eugenia Sanchís, Javier A Montero
1aAllergy Unit bOphthalmology Unit, Rio Hortega University Hospital, Valladolid, Spain.
Purpose Of Review:
Conventional diagnostic tests in allergy are insufficient to clarify the cause of vernal conjunctivitis. Component-resolved diagnostic (CRD) by microarray allergen assay may be useful in detecting allergens that might be involved in the inflammatory process.
Recent Findings:
In a recent trial in patients suffered from eosinophilic esophagitis, after 2 years of the CRD-guided exclusion diet and specific immunotherapy, significant clinical improvement was observed, and 68% of patients were discharged (cure based on negative biopsy, no symptoms, and no medication intake). Our new objective was to evaluate IgE-mediated hypersensitivity by CRD in tears and serum from patients with vernal conjunctivitis and treat patients with identified triggering allergens by specific immunotherapy. Twenty-five patients with vernal conjunctivitis were evaluated. The identified triggering allergens were n Lol p 1 (11 cases), n Cyn d 1 (eight cases), group 4 and 6 grasses (six cases) and group 5 of grasses (five cases). Prick test and pollen IgE were positive in one case. Clinical improvement was observed in 13/25 vernal conjunctivitis patients after 1-year specific immunotherapy.
Summary:
CRD seems to be a more sensitive diagnostic tool compared with prick test and IgE detection. Specific CRD-led immunotherapy may achieve clinical improvements in vernal conjunctivitis patients.
