Objective To compare the effects of remifentanil and fentanyl in urologic surgery under endoscopic anesthesia and the incidence of adverse reactions in patients.Methods A total of 170 patients undergoing urological surgery admitted to the Second People 's Hospital of Jinzhong from February 2015 to April 2016 were randomly divided into the study group and control group according to the digital table ,with 85cases in each group. Remifentanil and fentanyl was used in the study group and control group respectively .The preoperative anesthesia was performed in the patients who received anesthesia before and after tracheal intubation and before and after tracheal intubation,and the time of induction of anesthesia ,the operation time and the time of postoperative wakefulness were compared between the two groups.Pressure and heart rate changes ,the incidence of adverse reactions were recorded and compared between the two groups.The amount of anesthesia ,anesthesia surgery costs and the amount of bleeding during surgery were compared.Results The induction time of anesthesia in the study group was significantly shorter than that in the control group (9.8min vs.6.9min,t＝12.029,P＜0.05).The mean arterial pressure and heart rate in the study group were significantly larger than those in the control group ( all P＜0.05).The incidence rate of adverse reactions in the study group was significantly lower than that in the control group (5.9% vs.12.9%,χ2＝7.935,P＜0.05).The cost and blood loss of the study group were significantly lower than those of the control group (2 871.4 CNY vs.3 014.9 CNY;23.4mL vs.32.7mL,t＝20.391,17.907,all P＜0.05).Conclusion The application of remifentanil in preoperative anesthesia of urologic surgery can save time ,reduce the economic burden of patients and the incidence of adverse reactions in patients.It is worthy of widely recommended in clinic.

AIM: To understand the current status and differences in visual acuity of children of the same age from different regions of Xi'an, and to take an effective basis for the prevention of children's myopia.METHODS: Random stratified sampling was used to select the uncorrected distance visual acuity and computed dioptric data of 41 285 children aged 6-12 from 6 towns, 10 urban and rural areas and 112 country schools screened by Xi'an Central Hospital in December 2022.RESULTS: The myopia detection rate in different regions of Xi'an is 47.16% in towns, 38.59% in urban and rural areas, and 32.29% in the country, and the total myopia rate is 37.50%. The myopia rate of 6-12 years old in towns is higher than that in urban and rural areas, and that of urban and rural areas is higher than that of country; the myopia rate of girls is higher than that of boys; myopia rate increases with age; mild myopia: the myopia rate in towns is significantly higher than that of the urban and rural areas and the country; high myopia: the myopia rate in the country is significantly higher than that of the towns and the urban and rural areas. The total rate of deficient hyperopia reserves in different regions of Xi'an is 92.08% in towns, 93.67% in urban and rural areas, and 90.92% in the country, and the total rate of deficient hyperopia reserves is 92.09%. The rate of deficient hyperopia reserves at the age of 6-12 is higher in the urban and rural areas than in the towns, and higher in the towns than in the country; the total rate of deficient hyperopia reserve is higher in girls than in boys; it is the peak period of the development of hyperopia reserve rate before the age of 8.CONCLUSION: The total myopia rate and the total vision reserve deficiency rate of 6-12 years old in different regions of Xi'an are different, and 8-9 years old is the accelerated period of myopia development, and the peak of deficient hyperopia reserve is before the age of 8 years old. With the growth of age, the myopia rate shows a certain growth trend, and the rate of deficient hyperopia reserve shows a decreasing trend after reaching the peak. The total myopia rate and insufficient acuity reserve rate of girls are higher than those of boys.