ABSTRACT
Objective To optimize the nasal examination procedures for preliminary medical selection of pilot cadets,to reduce the use of medicine for nasal congestion,to simplify the workflow and to improve the efficiency.Methods In the course of recruiting pilots,all the 306 candidates in seven districts of a province were selected and randomly divided into the exercise-first group (n =166) and the spraying-first group (n =140).In the exercise-first group,the nasal cavity of the students was observed under the anterior rhinoscope at three time points:before exercise/spraying,after simple exercise,and after exercise/spraying(exercise first).In the second group,the nasal cavity was observed under the anterior rhinoscope at three time points:before exercise/spraying,after simple spraying,and after exercise/spraying(spraying first).Conclusions were drawn after nasal examination,and the percentage of clear conclusions in each group was statistically analyzed.Results In the case of simple exercise or simple nasal spraying,clear conclusions could be drawn about most of the candidates.There was no significant difference between the simple nasal spraying group and simple exercise group in the rate of clear conclusions.Conclusion During the preliminary recruitment of pilot students,the exercise method can be used to shrink the nasal cavity.For a few candidates whose conclusions cannot be drawn after exercise,nasal spray can be added to reduce congestion improve efficiency,and reduce the use of nasal congestion,thus reducing the indireet damage to candidates.During the re-check and final check,the nasal spray agent can be used to reduce the congestion and at the same time fast squatting 50 times in two minutes can be used as a the nasal cavity contraction method.
ABSTRACT
Objective To analyze the variation and influencing factors of distant vision of students during the recruitment selection and medical examination in two Air Force youth aviation schools in Northeast China in order to protect the youth aviation school students against myopia and to provide reference for interventions.Methods The distant vision of students of each grade in two schools in Northeast China was observed during the recruitment selection and during 2017 medical examination,and was statistically analyzed.The influencing factors of vision were investigated and analyzed.Results There was no statistically significant difference in the distant vision constituent ratio of students in Grade One and Grade Two during the recruitment selection and 2017 medical examination (P ≥ 0.05),but the difference was statistically significant in the distant vision constituent ratio of students in Grade Three during the recruitment selection and 2017 medical examination(P ＜0.01).There was statistically significant difference in the paired variable differences of students in each grade(P ＜0.01).The Logistic analysis result showed that reading distance and eating fruits and vegetables were the two important factors that influenced the visual acuity of the students.Conclustion The distant vision gets worse in the second semester of Grade Two,and the range of visual fluctuation is large.So regular examinations of visual acuity should be conducted and feasible measures of myopia protection should be taken to preserve hight-qnality sources of students.