Conscious Sedation for Cataract Operations Under Topical Anaesthesia

i.v. nalbuphine bolus of 50 μg/kg.

A bolus i.v. dose of propofol 0.5 mg/kg followed by an infusion of 0.025 mg/kg/min

i.v. loading dose of dexmedetomidine 1 μg/kg over 10 min followed by a maintenance infusion of 0.5 μg/kg/h.

Benoxinate hydrochloride 0.4% eye drops instilled twice, 5 minutes apart.