👨⚕️ Local anesthesia numbs a specific area, blocking pain signals to the brain. In eye care, it’s used for procedures like cataract surgery, corneal scraping, or injections.
Common agents:
- Lidocaine: Fast-acting, short duration
- Bupivacaine: Longer-lasting
- Proparacaine: Topical anesthetic for surface procedures
Administration:
- Topical drops: Surface anesthesia
- Injections: Subconjunctival or periocular blocks
- Gel or ointment: Prolonged effect
Effects:
- Numbness: Reduced pain sensation
- Muscle relaxation: Reduced eye movement
- Variable duration: Depends on agent and dose