Retrobulbar block was performed with 5 ml of 2% lidocaine hydrochloride (AritmalR, Osel, Istanbul, Turkey) in Group L patients and 5ml of 0.5% levobupivacaine (ChirocaineR, Abbvie, Chicago, USA) in Group LB patients. The block was performed by the same practitioner (fourth year assistant of Ophthalmology Department) using inferotemporal approach as described by Sanderson using 27 gage disposable needles (Atkinson Retrobulbar NeedleR, Asico, USA).