IRCT20180416039326N3 IRCT 2018-10-15 Esfahan University of Medical Sciences A comparison of sedative effect with dexmedetomidine -fentanyl versus midazolaml–fentanyl during cataract surgery with phacoemulsification technique Comparison of the sedative effect with Dexmedetomidine-Midazolam and Fentanyl- Midazolam in patients who candidated for Phacoemulsification cataract surgery referred to Isfahan Feyz hospital from 2017-2018 2018-06-11 anticipated 70 Complete https://irct.ir/trial/32077 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: The division of patients into two groups is based on a simple random sampling and Random allocation, Blinding description: The study is double blinded.Patient and researcher are unaware of patient groups and type of medication.The medications are prepared by an anesthetist and encoded an then injected.Demographic information; Sedation level. The quality of pain relief and hemodynamic variables and complications are collected by a patient who is not aware of the type of drug and patient grouping. 2 Cataract surgery. Intervention 1: Intervention group:patient in group (FD) received 1μg/kg Fentanyl with 0/5 μg/kg Dexmedetomidine in 20cc Normal salin for 10 minutes and then the continuous infusion of Dexmedetomidine 0/5 μg/kg/hr until the end of surgery. Intervention 2: Control group:patient in group (FM) received 1μg/kg Fentanyl with 0/05 mg/kg Midazolam in 20cc Normal salin for 10 minutes and then the continuous infusion of Midazolam 0/05 mg/kg/hr until the end of surgery. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is No more information