Micetinoftalmina (Chloramphenicol)

Micetinoftalmina (chloramphenicol) is an antibacterial agent used to treat bacterial infections of the eye.

• Bacterial conjunctivitis: Reduces bacterial load and accelerates resolution of redness, discharge, and irritation.
• Keratitis: Controls bacterial proliferation in corneal infection, promoting healing and preventing scarring.
• Other ophthalmic bacterial infections: Provides broad‑spectrum coverage for ocular pathogens causing blepharitis, ulcerative keratitis, or postoperative infections.

• Chloramphenicol inhibits bacterial protein synthesis by binding to the 50S ribosomal subunit, blocking peptide bond formation. This action halts bacterial growth (bacteriostatic) across a wide range of Gram‑positive and Gram‑negative organisms. In ocular tissues, the drug penetrates the cornea and conjunctiva, delivering sufficient concentrations to suppress pathogenic bacteria while sparing host cells. The effect is concentration‑dependent and persists for several hours after topical application.

Chloramphenicol eye drops may cause local and systemic adverse reactions, although most patients tolerate the medication well.

Common Side Effects

• Eye irritation: Stinging or burning sensation upon instillation.
• Redness: Mild conjunctival hyperemia.
• Tearing: Increased lacrimation.
• Blurred vision: Transient visual disturbance after dosing.

Serious or Rare Side Effects

• Allergic reaction: Swelling, rash, or hives indicating hypersensitivity.
• Hematologic toxicity: Rare aplastic anemia or bone‑marrow suppression.
• Stevens‑Johnson syndrome: Severe mucocutaneous eruption.
• Contact lens intolerance: Discomfort requiring removal.

When using Micetinoftalmina, clinicians should observe several safety considerations to minimize risks.

• Pregnancy: Category C; use only if potential benefit justifies potential fetal risk.
• Breastfeeding: Caution; chloramphenicol may be excreted in milk and could affect the infant.
• Allergy: Discontinue immediately if signs of hypersensitivity such as rash or swelling appear.
• Contact lens wearers: Remove lenses during treatment and re‑insert after dosing to avoid drug absorption.
• Systemic absorption: Limit use to prescribed duration to reduce risk of systemic toxicity.
• Store at room temperature: Keep in original container, protect from light and moisture.

Chloramphenicol can interact with other medications, affecting efficacy or safety.

Major Interactions (Avoid)

• Systemic aminoglycosides: May increase ototoxicity risk when combined with ocular absorption.
• Systemic anticoagulants (e.g., warfarin): Chloramphenicol can potentiate anticoagulant effect, raising bleeding risk.
• Concurrent ophthalmic antibiotics: May reduce overall antibacterial activity or cause antagonism.

Moderate Interactions (Monitor Closely)

• Topical non‑steroidal anti‑inflammatory drugs (NSAIDs): May heighten ocular irritation.
• Systemic corticosteroids: Can mask signs of infection, requiring careful monitoring.
• Alcohol: Rarely, systemic exposure may enhance central nervous system depression.