Related Experiment Videos
Randomized double-blind clinical trial comparing topical and sub-Tenon's anaesthesia in routine cataract surgery
S Srinivasan1, A I Fern, S Selvaraj
1Department of Ophthalmology, Hairmyres Hospital, Lanarkshire Acute Hospitals NHS Trust, Lanarkshire, Scotland, UK.
British Journal of Anaesthesia
|August 24, 2004
Summary
Topical anesthesia for cataract surgery causes more postoperative discomfort than sub-Tenon's anesthesia. However, both anesthesia methods showed similar rates of intraoperative complications, indicating comparable safety profiles.
Area of Science:
- Ophthalmology
- Anesthesiology
- Surgical Innovation
Background:
- Cataract surgery offers various local anesthesia techniques.
- Topical anesthesia is increasingly favored for its perceived simplicity.
- Evidence comparing patient experience and complications between topical and sub-Tenon's anesthesia is needed.
Purpose of the Study:
- To compare patient discomfort and intraoperative complications.
- To evaluate outcomes of routine cataract surgery under topical versus sub-Tenon's anesthesia.
Main Methods:
- A randomized, double-blinded, placebo-controlled trial.
- 210 patients were allocated to either sub-Tenon's (n=140) or topical anesthesia (n=70).
- Pain was assessed using a 10-point visual analogue scale postoperatively.
Main Results:
- Sub-Tenon's anesthesia group reported significantly lower mean pain scores immediately post-surgery (2.42 vs 3.44, P=0.0043).
- Lower mean pain scores were also observed at 30 minutes post-surgery in the sub-Tenon's group (1.24 vs 2.25, P=0.0009).
- No significant difference in intraoperative complications was noted between the two groups.
Conclusions:
- Topical anesthesia leads to greater postoperative discomfort in cataract surgery patients compared to sub-Tenon's anesthesia.
- Sub-Tenon's anesthesia provides superior pain relief post-cataract surgery.
- Both anesthesia techniques demonstrate comparable safety regarding intraoperative complications.