Therapeutic options in ocular allergic disease

Area of Science:

• Ophthalmology
• Allergology
• Immunology

Background:

• Ocular allergy encompasses conditions like allergic conjunctivitis and keratoconjunctivitis, often linked to atopy.
• Pathophysiology involves mast cells, eosinophils, and T cells, with varying prominence depending on the specific condition.
• Prognosis depends on the structures affected, with corneal involvement potentially leading to visual impairment.

Purpose of the Study:

• To review current therapeutic strategies for ocular allergies.
• To discuss the mechanisms involved in ocular allergic diseases.
• To explore existing and potential future treatments, addressing limitations of current approaches.

Main Methods:

• Review of existing literature on ocular allergy mechanisms and treatments.
• Analysis of therapeutic options including antigen avoidance, medical therapies, immunotherapy, and surgery.
• Discussion of pharmacological agents such as antihistamines, mast cell inhibitors, and corticosteroids.

Main Results:

• Current treatments include topical/oral antihistamines, mast cell stabilizers (e.g., sodium cromoglycate, nedocromil, lodoxamide), and topical steroids.
• Topical steroids are reserved for sight-threatening conditions due to significant adverse effects.
• Newer agents like levocabastine show improved potency and speed.
• Future possibilities include lipoxygenase and kinin pathway inhibitors, and topical cyclosporin.

Conclusions:

• Effective management of ocular allergies involves a combination of therapies tailored to the specific condition.
• There is an unmet need for potent yet safe topical anti-allergy preparations.
• Reliance on topical steroids for severe cases necessitates ongoing research into safer alternatives.