Minims (Oxybuprocaine Hydrochloride)

• Oxybuprocaine Hydrochloride acts as a topical ocular anesthetic to temporarily block sensation on the eye surface.
• Diagnostic ocular examinations (e.g., slit‑lamp biomicroscopy): Provides rapid, reversible anesthesia of the ocular surface to facilitate patient comfort and accurate assessment.
• Minor ocular procedures (e.g., foreign body removal, tonometry): Enables painless manipulation of the eye during brief interventions.
• Laser ophthalmic procedures (e.g., photocoagulation): Allows temporary loss of sensation to reduce reflex tearing and eye movement.

• Oxybuprocaine Hydrochloride reversibly blocks voltage‑gated sodium channels in peripheral nerve membranes of the ocular surface, preventing the initiation and propagation of nerve impulses. This inhibition halts the transmission of pain signals, resulting in localized anesthesia of the cornea and conjunctiva without systemic effects.

Common Side Effects

• Transient burning or stinging sensation upon instillation.
• Mild tearing or lacrimation.
• Temporary blurred vision that resolves shortly after application.

Serious or Rare Side Effects

• Allergic contact dermatitis presenting as redness and itching.
• Corneal epithelial toxicity leading to surface damage.
• Severe ocular inflammation, including uveitis, in rare cases.

• Oxybuprocaine Hydrochloride should be used under professional supervision and only for its intended ocular applications.
• Use only under professional supervision: ocular surface anesthesia should be administered by qualified eye‑care personnel.
• Avoid use in patients with known hypersensitivity to ester‑type anesthetics: discontinue if a reaction occurs.
• Limit exposure time: typically not exceeding the duration required for the procedure.
• Do not apply to compromised corneal epithelium unless directed: risk of delayed healing.
• Store at room temperature (below 25°C): keep in original container, protect from light and moisture.

Oxybuprocaine Hydrochloride may interact with other ocular agents and systemic medications.

Major Interactions (Avoid)

• Concurrent use with other ocular anesthetics: may increase risk of corneal toxicity.
• Combination with topical vasoconstrictors (e.g., phenylephrine): may enhance local irritation.

Moderate Interactions (Monitor Closely)

• Use with systemic sodium channel blockers (e.g., antiarrhythmics): monitor for additive effects.
• Co‑administration with preservative‑containing eye drops: may increase ocular surface irritation.
• Concurrent ocular surgery with prolonged exposure: monitor for delayed healing.