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Topical anesthesia in posterior vitrectomy.
J Yepez1, J Cedeño de Yepez, J F Arevalo
1Clinica de Ojos de Maracaibo, Clinica Oftalmologica Centro Caracas, Venezuela.
Retina (Philadelphia, Pa.)
|March 4, 2000
Summary
Topical anesthesia using lidocaine drops is a safe and effective alternative for posterior vitrectomy, avoiding risks associated with traditional injections. This method ensures patient comfort during vitreoretinal procedures.
Area of Science:
- Ophthalmology
- Surgical Anesthesia
Background:
- Traditional peribulbar or retrobulbar anesthesia carries risks like globe perforation and hemorrhage.
- Posterior vitrectomy is a complex surgical procedure requiring effective anesthesia for patient comfort and safety.
Purpose of the Study:
- To assess the efficacy of topical anesthesia as a substitute for peribulbar or retrobulbar anesthesia in posterior vitrectomy.
- To evaluate patient comfort and safety during posterior vitrectomy using topical anesthesia.
Main Methods:
- Prospective study of 134 eyes undergoing posterior vitrectomy with 4% lidocaine topical anesthesia.
- Patients had various vitreoretinal conditions, with some procedures combined with scleral buckling or laser photocoagulation.
- Subjective pain and discomfort were graded on a 1-4 scale; sedation was used as needed.
Main Results:
- All patients reported minimal pain (grade 1) during most of the procedure.
- Mild pain (grade 2) was experienced during specific surgical steps like sclerotomies and conjunctival closure.
- No patient required supplementary retrobulbar, peribulbar, or sub-Tenon anesthesia, with an average of 0.5 mL of lidocaine used.
Conclusions:
- Topical anesthesia is a safe and effective alternative for three-port pars plana vitrectomy.
- This technique eliminates risks associated with injectable anesthesia, such as globe perforation and retrobulbar hemorrhage.
- Appropriate patient selection is key for successful implementation of topical anesthesia in posterior vitrectomy.