RESUMO
We report an observational prospective study to determine which local anaesthetic technique gave the most comfort during phacoemulsification (cataract) surgery. 1835 patients were recruited. 61.8% were female. Peribulbar (18.2%), subtenons (28.6%), and topical (53.2%) anaesthesia was used. The pain score was assessed by the visual analogue pain scale (VAPS) which ranged from 0 (no pain) to 10 (worse possible pain). The lowest mean pain score occurred in the subtenons group, mean VAPS 0.2 (95% CI 0.1-0.3). The mean pain scores for topical and peribulbar anaesthesia were 0.6 (95% CI 0.5-0.7) and 0.59 (95% CI 0.41-0.76) respectively. Subtenons anaesthesia gave the most comfort during phacoemulsification. Patients experienced more discomfort with 2nd eye surgery. Older patients and males had a higher pain threshold in all three anaesthetic groups.