TOPICAL VERSUS PERIBULBAR ANAESTHESIA IN PHACOEMULSIFICATION

Topical anaesthesia avoids serious complications of orbital injectable anaesthesia and it is effective in small incision phacoemulisification.The aim of this thesis was to assess the safety and the efficacy of topical or cicumcorneal perilimbal anaesthesia versus peribulbar anaesthesia (Control group) in patients undergoing cataract surgery by phacoemulsification.100 cases were selected out of patients presenting with senile cataract at the Ophthalmic Out patients Clinics of Zagazig University Hospitals with exclusion of patients unsuitable for local anaesthesia and for phacoemulisification.Preoperative assessment included assessment of ocular motility, IOP measurement, slit lamp examination, visual acuity testing, fundus examination, ultrasonography and general examination.The patients were assigned randomly to have either topical anaesthesia (Group A) or peribulbar anaesthesia (Group B). Each group included 50eyes. Group A was subdivided into Group A1 (which included 25 eyes received topical anaesthesia by oxybuprocaine HCL 0.4% eye drops) and Group A2 (which included 25 eyes received topical anaesthesia by soaked sponge in 2% lidocaine to obtain cicumcorneal perilimbal anaesthesia).