• D Henzler, R Kramer, U H Steinhorst, S Piepenbrock, R Rossaint, and R Kuhlen.
• Medizinische Hochschule Hannover, Department of Anaesthesiology I, Hannover, Germany. dhenzler@ukaachen.de
• Eur J Anaesthesiol. 2004 Feb 1; 21 (2): 101-6.

Background And ObjectiveLittle has been documented about the development of pain after ophthalmic surgery. This study was designed to assess the incidence and severity of postoperative pain following ophthalmic surgery, and to identify key factors independently associated with development of such pain.MethodsIn a prospective, observational cohort study, 500 patients undergoing elective ophthalmic surgery were examined by assessing numerical analogue scales and analgesic requirements.ResultsDepending on anatomical location of surgery, operations could be classified into creating 'more severe' or 'less severe pain'. Patients undergoing posterior segment, corneal and muscle surgery exhibited the highest numerical analogue scale scores (risk ratio 4.5, 95% CI 3.01-6.79, P < 0.0001). Anterior segment surgery, which per se did not create much pain, resulted in significantly more pain when performed under general anaesthesia compared to regional anaesthesia (risk ratio 6.52, 95% CI 2.33-18.2, P < 0.0001). No other factors independently associated with an increased risk of developing serious postoperative pain could be identified.ConclusionsPatients undergoing certain ophthalmic operations, especially if performed under general anaesthesia, are more likely to experience serious postoperative pain.

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