Allergic conjunctivitis is an eye inflammation caused by allergens, with mold being a significant environmental trigger. When mold spores contact the eyes, they can provoke an allergic reaction in susceptible individuals, classified as a type 1 hypersensitivity. This immune response leads to inflammation of the conjunctiva, resulting in discomfort and visual disturbances.

Unlike viral and bacterial conjunctivitis, allergic conjunctivitis is not contagious; it stems from internal immune processes reacting to external allergens. Understanding these mechanisms is essential for prevention and effective management.
Medical professionals categorize allergic conjunctivitis into three main subtypes:
- Perennial Allergic Conjunctivitis (PAC): This type is persistent and linked to year-round allergens like dust mites, pet dander, and mold.
- Seasonal Allergic Conjunctivitis (SAC): Occurring during specific seasons, this variant is associated with high pollen counts from trees or grasses, leading to episodic flare-ups.
- Acute Allergic Conjunctivitis: Characterized by a sudden onset of severe symptoms, this type typically resolves quickly once the allergen is removed.
Symptoms include redness, itching or burning sensations, tearing, and swelling of the conjunctiva. Patients may also experience light sensitivity and a gritty feeling in the eyes. Early recognition of these symptoms is crucial for effective intervention.
Management strategies focus on allergen avoidance, particularly reducing mold exposure by maintaining dry, well-ventilated indoor spaces and using air filters. Treatment options include cold compresses, artificial tears, antihistamine eye drops, and, for severe cases, mast cell stabilizers, steroid drops, and NSAIDs. Immunotherapy may also be considered for persistent symptoms.
Understanding the nature of allergic conjunctivitis and its treatment options empowers patients to manage their eye health effectively. Seeking professional medical advice is recommended for those with persistent or severe symptoms.
