Oratoria (Dexamethasone Phosphate)

Dexamethasone phosphate is a potent anti‑inflammatory corticosteroid that acts on ocular inflammatory pathways.

• Post‑operative ocular inflammation: reduces swelling and pain after eye surgery.
• Anterior uveitis: controls inflammation of the front part of the eye.
• Allergic conjunctivitis: alleviates redness and itching caused by allergic reactions.

• Dexamethasone phosphate is a synthetic glucocorticoid that penetrates ocular tissues and binds to intracellular glucocorticoid receptors. The drug‑receptor complex translocates to the nucleus, where it modulates gene transcription, suppressing pro‑inflammatory cytokines, prostaglandin synthesis and leukocyte migration, thereby reducing inflammation and immune activation in the eye.

Adverse reactions may occur following ocular administration of dexamethasone phosphate.

Common Side Effects

• Increased intra‑ocular pressure: transient rise that may require monitoring.
• Cataract formation: accelerated lens opacity with prolonged use.
• Ocular irritation: stinging or burning sensation on instillation.
• Blurred vision: temporary visual disturbance after dosing.
• Conjunctival hyperemia: redness of the eye surface.

Serious or Rare Side Effects

• Secondary ocular infection: bacterial or fungal infection due to immunosuppression.
• Glaucoma: sustained elevation of intra‑ocular pressure leading to optic nerve damage.
• Vitreous hemorrhage: bleeding within the eye cavity.
• Endophthalmitis: severe intra‑ocular infection requiring urgent treatment.

When using dexamethasone phosphate, clinicians should consider several safety measures.

• Monitor intra‑ocular pressure: regular checks are essential, especially in glaucoma‑susceptible patients.
• Limit duration of therapy: avoid prolonged use to reduce risk of cataract and pressure rise.
• Assess for infection: ensure no active ocular infection before initiating therapy.
• Use with caution in diabetics: systemic absorption may affect blood glucose control.
• Store at below 25°C: keep in the original container, protect from light and moisture.

Dexamethasone phosphate may interact with other medications that influence intra‑ocular pressure or systemic corticosteroid exposure.

Major Interactions (Avoid)

• Carbonic anhydrase inhibitors (e.g., dorzolamide): may exacerbate intra‑ocular pressure elevation.
• Antifungal agents (e.g., ketoconazole): can increase systemic corticosteroid levels.

Moderate Interactions (Monitor Closely)

• Non‑steroidal anti‑inflammatory drugs (NSAIDs): additive anti‑inflammatory effect may mask infection signs.
• Antidiabetic drugs: systemic absorption may require dose adjustment of insulin or oral hypoglycemics.
• Antihistamines: may potentiate ocular drying, increasing discomfort.