👁️ Proparacaine Eye Drops 0.5%
🔹 1. Prescription / Indication:
Proparacaine Hydrochloride 0.5% eye drops are a topical ophthalmic anesthetic used for:
- Numbing the eye surface before:
- Tonometry (intraocular pressure measurement)
- Gonioscopy
- Foreign body removal
- Minor eye procedures (e.g., suture removal)
- Diagnostic procedures (e.g., fluorescein staining)
🔹 2. Description:
- Generic Name: Proparacaine Hydrochloride
- Strength: 0.5% (i.e., 5 mg/mL)
- Dosage Form: Sterile ophthalmic solution (eye drops)
- Appearance: Clear, colorless to pale yellow liquid
- Route: Ophthalmic (for eye only)
🔹 3. Composition:
| Component | Purpose |
|---|
| Proparacaine HCl 0.5% | Active ingredient (anesthetic) |
| Benzalkonium chloride | Preservative (in some brands) |
| Sodium chloride, Boric acid | Isotonicity and pH balance |
| Purified water | Solvent |
🔹 4. Advantages:
- Rapid onset of anesthesia (within 30 seconds)
- Short duration (10–20 minutes), ideal for brief procedures
- Non-irritating, generally well-tolerated
- Enables painless diagnostic and minor surgical interventions
- Safer and more stable compared to older agents like cocaine or tetracaine
🔹 5. Nature / Drug Class:
- Pharmacological class: Local anesthetic (ester-type)
- Mechanism: Blocks sodium channels in nerve endings, preventing pain transmission
- Onset: 20–30 seconds
- Duration: 10–20 minutes (reapplication possible under supervision)
🔹 6. Common Packaging:
- Sterile plastic dropper bottle (typically 5 mL or 15 mL)
- Labeled as:
- “Proparacaine HCl Ophthalmic Solution 0.5%”
- “For Professional Use Only”
- Single-use minims or unit-dose packs also available for clinical settings
🔹 7. Storage:
- Store at 2°C to 8°C (refrigerated)
- Protect from light and freezing
- Do not use if solution becomes discolored or cloudy
- Use within 28 days after opening, or as per manufacturer guidelines
🔹 8. Patient Advice:
- Only for professional use — not for home application
- Do not rub the eye while numb — may worsen corneal damage
- Temporary blurring, stinging, or foreign body sensation may occur
- Do not wear contact lenses immediately after use
- Avoid touching the dropper tip to prevent contamination
- Inform doctor of any allergies or eye infections
🔹 9. Purpose / Clinical Use:
| Procedure | Use of Proparacaine |
|---|
| Tonometry | Numbs cornea for painless IOP check |
| Foreign body removal | Allows manipulation without pain |
| Fluorescein staining | Used prior to applying stain |
| Minor surgical procedures | Corneal/conjunctival anesthesia |
| Gonioscopy & Contact Lens Fitting | Reduces discomfort |
⚠️ Warnings & Precautions:
- Not for prolonged use – repeated or unsupervised use can cause corneal toxicity, delayed healing, epithelial damage, or keratitis
- Should only be administered by trained medical personnel
- Avoid use in patients with known hypersensitivity
- Not to be used as an anesthetic for intraocular surgery
