The main ingredient of dexamethasone eye drops is dexamethasone, which belongs to the adrenocorticosteroid class of drugs, and it has a variety of pharmacological effects such as anti-inflammatory, anti-allergic and immunosuppressive. It has a relatively potent anti-inflammatory effect that reduces and prevents the tissue’s response to inflammation, thereby reducing severe manifestations. In addition to this, it has anti-allergic and immunosuppressive effects, which prevent or inhibit immune responses in cells, delay the onset of allergic reactions, and reduce the expansion of primary immune responses. In clinical practice, dexamethasone drops are used for iridocyclitis, iritis, partial keratitis, allergic conjunctivitis, blepharitis, and dacryocystitis. This drug is generally not recommended for long-term use