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Subconjunctival lidocaine before laser treatment: a randomized trial
Paul E Tesha1, Louis R Giavedoni, Alan R Berger
1Department of Ophthalmology, Lincoln County Hospital, Lincoln, UK.
Ophthalmology
|June 24, 2010
Summary
Subconjunctival lidocaine effectively reduced pain incidence during laser retinopexy procedures. This anesthesia method significantly lowered pain occurrence in patients undergoing panretinal photocoagulation or peripheral laser retinopexy.
Area of Science:
- Ophthalmology
- Anesthesiology
Background:
- Laser retinopexy, including panretinal photocoagulation (PRP) and peripheral laser retinopexy (PLR), is a common ophthalmic procedure.
- Pain during these procedures can impact patient experience and compliance.
Purpose of the Study:
- To evaluate the efficacy of subconjunctival anesthesia in mitigating pain associated with laser retinopexy.
- To compare pain incidence and severity between subconjunctival lidocaine and sham injections.
Main Methods:
- A single-center, prospective, randomized, controlled trial was conducted.
- Patients undergoing PRP or PLR were randomized to receive either subconjunctival lidocaine or a sham injection.
- A crossover design was used for patients requiring a second treatment session.
Main Results:
- In the primary study group, 59% of patients receiving anesthetic experienced pain versus 97% receiving sham (P<0.001).
- In the crossover group, 43% receiving anesthetic experienced pain versus 100% receiving sham (P<0.001).
- Pain severity scores were not significantly different between groups when pain was experienced.
Conclusions:
- Subconjunctival 2% lidocaine significantly reduces the incidence of pain during laser retinopexy procedures.
- The findings support the use of subconjunctival lidocaine as an effective analgesic for PRP and PLR.
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