| Objective: This study aims to understand the effect of eye exercises on preventing and controlling myopia through standardized guidance for primary school students to do eye exercises,analyze whether eye exercises play a role in preventing and controlling myopia by affecting the adjustment function of eyes,and explore an effective way to prevent and control myopia.Methods: The cases in this study were from students aged 9～11 who were enrolled in Grade 3 of Yuanhu Road Primary School from September 2020 to January 2021.The students were in the same school and grade,and their learning load and eye load were basically the same.All the patients were treated with compound topicamide for rapid paralysing of the ciliary muscle and dilatation,and comprehensive optometry was performed.Students with spherical lens of +0.5～-0.5DS and astigmatism ≤-0.5DC and meeting the inclusion criteria were included in the subject.Before the study,they were given eye exercises cognition score(see Appendix 3),and 30 students with cognition score greater than 6 were included in the study group.30 cases of students with cognition score less than 6 points were included into the control group.The experimental group received standard eye exercises teaching,while the control group did eye exercises according to the original method.The study lasted for 3 months.Before and after the intervention,the students in the two groups were compared with each other in terms of visual acuity,diopter,axis,range of adjustment,sensitivity of adjustment,positive and negative relative adjustment.Visual fatigue symptom score was also conducted to observe the changes of parameters before and after the intervention.This study was a prospective,non-randomized controlled clinical trial.Results: 1.Visual acuity: there was no difference between the study group and the control group before intervention,and the difference was not statistically significant(P>0.05).There was no difference in visual acuity between the study group and the control group after intervention,and the difference was not statistically significant(P>0.05).The visual acuity of students in the study group before and after intervention was different,and the difference was statistically significant(P<0.05).The visual acuity of students in the control group before and after intervention was not different,and the difference was not statistically significant(P>0.05).2.Equivalent spherical mirror: there was no difference between the study group before intervention and the control group before intervention,and the difference was not statistically significant(P>0.05).The equivalent spherical mirror comparison between the study group and the control group after intervention showed no difference,and the difference was not statistically significant(P>0.05).There was no difference in equivalent spherical mirror between the study groups before and after intervention,and the difference was not statistically significant(P>0.05).The equivalent spherical mirror of the control group increased after intervention compared with before,and the equivalent spherical mirror of the control group was different before intervention and after intervention,the difference was statistically significant(P< 0.05).3.Axis: There was no difference in axial length between the study group and the control group before intervention,and the difference was not statistically significant(P>0.05).There was no difference in axial length between the study group and the control group after intervention,and the difference was not statistically significant(P>0.05).There was significant difference in axial length between the study group before and after intervention(P< 0.05).The axial length of the control group was different before and after intervention,and the difference was statistically significant(P<0.05).4.Adjustable range: there was no difference in the range between the study group and the control group before intervention,and the difference was not statistically significant(P>0.05).There was significant difference in the adjustment range between the study group and the control group after intervention(P<0.05).There was significant difference in the range of adjustment between the study group before and after intervention(P< 0.05).There was no difference in the adjustment range between the control group before intervention and after intervention,and the difference was not statistically significant(P>0.05).5.Regulatory sensitivity: There was no difference in the regulatory sensitivity between the study group and the control group before intervention,and the difference was not statistically significant(P>0.05).There was significant difference in the adjustment sensitivity between the study group and control group after intervention(P<0.05).There was significant difference in the adjustment sensitivity between the study group before and after intervention(P<0.05).There was no difference in the adjustment sensitivity between the control group before and after intervention,and the difference was not statistically significant(P>0.05).6.Positive relative regulation: there was no difference in positive relative regulation between the study group and the control group before intervention,and the difference was not statistically significant(P>0.05).There was no difference in the positive relative adjustment between the study group and the control group after intervention,and the difference was not statistically significant(P>0.05).The study group showed no difference in the positive relative adjustment before and after intervention,and the difference was not statistically significant(P>0.05).There was no difference in the positive relative adjustment of the control group before and after intervention,and the difference was not statistically significant(P>0.05).7.Negative relative regulation: there was no difference in the negative relative regulation value between the study group and the control group before intervention,and the difference was not statistically significant(P>0.05).There was no difference in the negative relative regulation value between the study group and the control group after intervention,and the difference was not statistically significant(P>0.05).There were significant differences in the negative relative regulation values between the study group before and after intervention(P<0.05).There were significant differences in the negative relative regulation values between the control group and the control group before and after intervention(P<0.05).8.Visual fatigue symptom score: there was no difference in visual fatigue symptom score between the study group and the control group before intervention,and the difference was not statistically significant(P>0.05).There was no significant difference in visual fatigue symptom scores between the study group and the control group after intervention(P>0.05).The scores of visual fatigue symptoms in the study group were different before and after intervention,and the difference was statistically significant(P<0.05).The scores of visual fatigue symptoms in the control group before and after intervention showed no difference,and the difference was not statistically significant(P>0.05).Conclusion(s): 1.Standardized eye exercises play a certain role in improving naked eye vision and controlling the development of diopter in school-age children.2.Standardizing eye exercises can improve the adjustment sensitivity,range and negative relative adjustment of school-age children,relieve the symptoms of visual fatigue,and prevent or delay the occurrence and development of myopia in school-age children to a certain extent. |
PDF Full Text Request