IRCT20201109049315N1 IRCT 2020-12-09 University of social welfare and rehabilitation sciences "Comparison of the Impact of Surgery Preparation Training through Videos on Pre-operation Anxiety" " Comparison of the Impact of Cataract Surgery Preparation Training through Videos on the Elderly’s Pre-operation Anxiety" 2020-12-19 anticipated 50 Complete https://irct.ir/trial/52204 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Prevention, Randomization description: "Permuted block randomization will be used to determine the control and intervention groups. For this purpose, 13 blocks, each made up of four parts, will be selected through sampling with replacement". N/A Condition 1: Anxiety. Condition 2: Cataract. Intervention 1: "The intervention group will be shown the film three times, the first time in the clinic, the second time next week and the third time half an hour before the operation". Intervention 2: "No training is given to the control group". 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 There is no more information