2. Methods and Materials This descriptive study have been performed on 250 patients over 16 years old who undergone elective eye surgery from October 2014 through January 2014. These patients were visited the day before surgery by anesthesiologist who didn’t intervene in data collecting process. Admitting to operating theater, they were enrolled consecutively to study and a prepared questionnaire was filled by investigators before surgery. Exclusion criteria from study included preoperative visit of patients by investigator, lack of patient’s cooperation and satisfaction, memory and conscious disorders, patient unfavorable status for answer to questions, and finally emergency surgery. When entering to operating room, in few minutes, firstly the importance and common reason for preoperative fasting and probable complications due to stomach contents during anesthesia were discussed with the patients. The examples and consumption of different food groups (heavy meal, light meal and clear liquids) discussed. Then data due to fasting condition and any dissatisfaction questioned and collected. The effective persons in determination of the final fasting period were clarified. The collected data analyzed by Chi-squared relationship and Fisher’s exact test or regression ratings.