ObjectiveTo provide a reference for the prevention and control of myopia by analyzing and discussing the findings of an epidemiological survey of the prevalence of myopia among children and adolescents in Fuzhou City from 2019 to 2021.MethodsParticipants for this cross-sectional study were drawn from Gulou District and Minqing County in Fuzhou City using cluster random sampling to account for differences in population density, economic development, and other environmental variables.ResultsMyopia was more prevalent in 2020 than in 2019, but by 2021 it had dropped to about the same level as in 2019. Myopia was more prevalent among girls than boys during the course of the study period, with a three-year prevalence of 44.72% for boys and 52.16% for girls. Mild myopia accounted for 24.14% of all cases, followed by moderate myopia at 19.62%, and severe myopia at 4.58%. Students in urban regions had a prevalence of myopia equivalent to that of students in the suburbs, and this prevalence rose with age.ConclusionMyopia was quite prevalent among children and adolescents in Fuzhou City, and was shown to be steadily rising as students progressed through the school system. This suggests that all levels of government, educational institutions, medical facilities, and concerned parents in Fujian Province should focus on the issue of myopia and collaborate to reduce the risk factors for the development of myopia in school-aged participants.

No abstract

In order to explore the relationship between the habit of using eyes and myopia, summarize and put forward to develop good habit of using eyes of school-age children to achieve the purpose of preventing myopia. 960 school-age children aged 7 to 12 were selected from the ophthalmology clinic of Fujian Provincial Government Hospital. The data collected included reading distance, sleep time, average daily outdoor activity time, average daily continuous eye use time. Ophthalmologists are responsible for visual examination, which includes mild myopia, moderate myopia and severe myopia. SPSS 22.0 statistical software was used for data processing. As a results, P < 0.05 was statistically significant. There are significant differences in the distribution of sleep time among the three groups (P < 0.05); There are significant differences in the time distribution of each continuous close eye use among the three groups (P < 0.05); There are significant differences in the distribution of distance habit among the three groups (P < 0.05); There are significant differences in the distribution of outdoor activity time among the three groups (P < 0.05).Myopia is closely related to the time of close eye use, the distance of eye use, the length of sleep and the length of outdoor activities.

No abstract

Objective: To study the changes of macular retinal thickness in children with moderate and low myopia by frequency domain OCT. Methods: 108 school-age children aged 7-12 years were selected and enrolled into the group. Among them, 58 cases (116 eyes) with simple moderate and low myopia in the myopia group and 50 cases (100 eyes) with straight eyes in the emmetropia group. The retinal thickness in different parts of macular area was compared between the two groups, and the correlation between retinal thickness in different parts of macular area and diopter and axial length was analyzed by Pearson correlation analysis. Results: The length of eye axis in moderate and low myopia group was longer than that in emmetropia group, and the difference was statistically significant (P < 0.05). There was no significant difference in CMT(Central Macular Thickness) and I-AMT(average macular thickness of inner circle) between the two groups (P > 0.05). The AMT(Average Macular Thickness) and O-AMT(average macular thickness of outer circle) in moderate and low myopia group were lower than those in emmetropia group, and the differences were all statistically significant (P < 0.05). The thickness of the retina below the macula and the nasal side was positively correlated with the refractive power in patients with moderate to low-grade myopia (r=0.201, 0.302, P＜0.05), and the thickness of the retina around the macula was negatively correlated with the refractive power (r=-0.326, P＜0.05). Conclusion: There is no significant difference in macular central retinal thickness between children with moderate and low myopia and normal children, and the thickness of paracentral retina tends to become thinner with the deepening of myopia.