IRCT20200605047662N2 IRCT 2020-06-09 Esfahan University of Medical Sciences Effect of Nasal Ketamine in Patients with Cataract Surgery Comparison of the Effectiveness of Nasal Ketamine vs. Intravenous (IV) Ketamine in anesthesia in Patients with Cataract Surgery 2018-12-09 anticipated 90 Complete https://irct.ir/trial/48650 interventional Randomization: Randomized, Blinding: Triple blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: The 45 pieces of paper that were written on it A and the other 45 pieces that were written B (a total of 90 pieces) are folded into a non-transparent bag. Then 30 minute before the operation, one of the pieces were selected randomly by a person who does not know about the details. In case of A patient categorized as the intera-venous Ketamine group, and in case of B, it belongs to the nasal Ketamine group, Blinding description: Patient, surgeon and data collector. 2 Cataract. Intervention 1: Intervention group: Ketamine (1 mg / kg with a volume of 2 cc) was administered Intravenously. Intervention 2: Intervention group: Normal saline (2 cc) was injected intravenously and ketamine (1 mg / kg 2 cc) intravenously. 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