Diagnosis of allergic conjunctivitis

Area of Science:

• Ophthalmology
• Allergology
• Cytology

Background:

• Allergic conjunctivitis is a common ocular disease.
• Identifying reliable diagnostic markers for allergic conjunctivitis is crucial for effective patient management.

Purpose of the Study:

• To evaluate the significance of itching as a symptom in allergic conjunctivitis.
• To determine the diagnostic value of eosinophils and eosinophil granules in conjunctival scrapings for allergic conjunctivitis.

Main Methods:

• Patient interviews to record symptoms, specifically itching.
• Analysis of conjunctival scrapings to identify intact eosinophils or eosinophil granules.
• Correlation of clinical symptoms with cytologic findings.

Main Results:

• Itching was reported by 80% of patients diagnosed with allergic conjunctivitis.
• Eosinophils or eosinophil granules were detected in 84% of conjunctival scrapings.
• Eosinophil granules were identifiable even when intact eosinophils were absent, serving as a reliable cytologic marker.

Conclusions:

• A history of itching is a significant indicator of allergic conjunctivitis.
• The presence of eosinophils or eosinophil granules in conjunctival scrapings is a valuable diagnostic tool for allergic conjunctivitis.
• Combining symptom history with cytologic analysis improves diagnostic accuracy for allergic conjunctivitis.