scholarly journals Prevalence of reduced visual acuity among school-aged children and adolescents in 6 districts of Changsha city: a population-based survey

2020 ◽  
Author(s):  
Menglian Liao ◽  
zehuai cai ◽  
Muhammad Ahmad Khan ◽  
Wenjie Miao ◽  
Ding Lin ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Secondary School ◽  
Secondary School Students ◽  
Population Based ◽  
Primary Grade ◽  
School Students ◽  
School Aged Children ◽  
Distant Visual Acuity ◽  
Grade 3 ◽  
Primary And Secondary School

Abstract Background: To calculate and evaluate the prevalence of reduced uncorrected distant visual acuity (UCDVA) in primary and secondary school students in 6 districts of Changsha, Hunan, China. Methods: A population-based retrospective study was conducted in 239 schools in 6 districts of Changsha. After routine eye examination to rule out diseases that can affect refraction, 250,980 eligible students from elementary, middle and high schools were enrolled in the survey. Then the uncorrected distant and near visual acuity of each eye were measured. Categories of schools, districts, grades, eye exercises and sports time were also documented and analyzed. Results: The overall prevalence of reduced UCDVA was 51.8% (95% confidence interval [CI]: 51.6%-52.0%) in 6 districts of Changsha. Results of individual districts were as follows: Furong district 59.9%(95% CI: 57.9%-61.8%), Tianxin district 62.3%(95% CI: 60.5%-64.0%), Wangcheng district 47.8%(95% CI: 46.8%-48.8%), Kaifu district 58.5%(95% CI: 58.0%-58.9%), Yuhua district 47.0%(95% CI: 46.7%-47.4%) and Yuelu district 52.6%(95% CI: 52.3%-52.9%). The proportion of normal VA is seen to decrease from primary grade 3. The proportion of mildly reduced UCDVA is higher in primary grade 1 and 2. The proportion of moderately reduced UCDVA remains similar during 12 grades. The proportion of severely reduced UCDVA increases with grades. Multivariate analysis shows that the prevalence of reduced UCDVA is higher in key schools (odds ratio [OR]= 1.47, 95% CI 1.44-1.50) than non-key schools. Conclusions: According to the existing data analysis results, the prevalence of reduced UCDVA among primary and secondary school students in Changsha is very high. Some effective measures need to be taken to prevent it.

scholarly journals Prevalence of reduced visual acuity among school-aged children and adolescents in 6 districts of Changsha city: a population-based survey

2020 ◽  
Author(s):  
Menglian Liao ◽  
Zehuai Cai ◽  
Muhammad Ahmad Khan ◽  
Wenjie Miao ◽  
Ding Lin ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Secondary School ◽  
Secondary School Students ◽  
Population Based ◽  
Primary Grade ◽  
School Students ◽  
School Aged Children ◽  
Near Visual Acuity ◽  
Grade 3 ◽  
Primary And Secondary School

Abstract Background: To calculate and evaluate the prevalence of reduced visual acuity(VA) in primary and secondary school students in 6 districts of Changsha, Hunan, China. Methods: A population-based retrospective study was conducted in 239 schools in 6 districts of Changsha. After routine eye examination to rule out diseases that can affect refraction, 250,980 eligible students from elementary, middle and high schools were enrolled in the survey. Then the uncorrected distant and near visual acuity of each eye were measured. Categories of key schools, districts, grades, eye exercises and sports time were also documented and analyzed. Results: The overall prevalence of reduced VA was 51.8% (95% confidence interval [CI]: 51.6%-52.0%) in 6 districts of Changsha. Results of individual districts were as follows: Furong district 59.9%(95% CI: 57.9%-61.8%), Tianxin district 62.3%(95% CI: 60.5%-64.0%), Wangcheng district 47.8%(95% CI: 46.8%-48.8%), Kaifu district 58.5%(95% CI: 58.0%-58.9%), Yuhua district 47.0%(95% CI: 46.7%-47.4%) and Yuelu district 52.6%(95% CI: 52.3%-52.9%). The proportion of normal VA is seen to decrease from primary grade 3. The proportion of mildly reduced VA is higher in primary grade 1 and 2. The proportion of moderately reduced VA remains similar during 12 grades. The proportion of severely reduced VA increases with grades. Multivariate analysis shows that the prevalence of reduced VA is lower in the province level key schools (odds ratio [OR]=1.23, 95% CI 1.13-1.33) than in the municipal level key schools (OR=1.47, 95% CI 1.44-1.50). Conclusion: According to the existing data analysis results, the prevalence of reduced VA among primary and secondary school students in Changsha is very high. Some effective measures need to be taken to prevent it.

scholarly journals Prevalence of reduced visual acuity among school-aged children and adolescents in 6 districts of Changsha city: a population-based survey

2020 ◽  
Author(s):  
Menglian Liao ◽  
zehuai cai ◽  
Muhammad Ahmad Khan ◽  
Wenjie Miao ◽  
Ding Lin ◽  
...  
Keyword(s):  
Visual Acuity ◽  
High School Students ◽  
High Schools ◽  
Population Based ◽  
Primary Grade ◽  
School Students ◽  
School Aged Children ◽  
Distant Visual Acuity ◽  
Near Visual Acuity ◽  
Grade 3

Abstract Background: To calculate and evaluate the prevalence of reduced uncorrected distant visual acuity (UCDVA) in primary, middle and high schools in 6 districts of Changsha, Hunan, China. Methods: A population-based retrospective study was conducted in 239 schools in 6 districts of Changsha. After routine eye examination to rule out diseases that can affect refraction, 250,980 eligible students from primary, middle and high schools were enrolled in the survey. Then the uncorrected distant and near visual acuity of each eye were measured. Categories of schools, districts, grades, eye exercises and sports time were also documented and analyzed. Results: The overall prevalence of reduced UCDVA was 51.8% (95% confidence interval [CI]: 51.6%-52.0%) in 6 districts of Changsha. Results of individual districts were as follows: Furong district 59.9%(95% CI: 57.9%-61.8%), Tianxin district 62.3%(95% CI: 60.5%-64.0%), Wangcheng district 47.8%(95% CI: 46.8%-48.8%), Kaifu district 58.5%(95% CI: 58.0%-58.9%), Yuhua district 47.0%(95% CI: 46.7%-47.4%) and Yuelu district 52.6%(95% CI: 52.3%-52.9%). The proportion of normal VA is seen to decrease from primary grade 3. The proportion of mildly reduced UCDVA is higher in primary grade 1 and 2. The proportion of moderately reduced UCDVA remains similar during 12 grades. The proportion of severely reduced UCDVA increases with grades. Multivariate analysis shows that the prevalence of reduced UCDVA is higher in key schools (risk ratio [RR]= 1.47, 95% CI 1.44-1.50) than non-key schools. Conclusions: According to the existing data analysis results, the prevalence of reduced UCDVA among primary, middle and high school students in Changsha is very high. Some effective measures need to be taken to prevent it.

scholarly journals Prevalence of reduced visual acuity among school-aged children and adolescents in 6 districts of Changsha city: a population-based survey

2020 ◽  
Author(s):  
Menglian Liao ◽  
Zehuai Cai ◽  
Muhammad Ahmad Khan ◽  
Wenjie Miao ◽  
Ding Lin ◽  
...  
Keyword(s):  
Visual Acuity ◽  
High School Students ◽  
High Schools ◽  
Population Based ◽  
Primary Grade ◽  
School Students ◽  
School Aged Children ◽  
Distant Visual Acuity ◽  
Near Visual Acuity ◽  
Grade 3

Abstract Background: To calculate and evaluate the prevalence of reduced uncorrected distant visual acuity (UCDVA) in primary, middle and high schools in 6 districts of Changsha, Hunan, China.Methods: A population-based retrospective study was conducted in 239 schools in 6 districts of Changsha. After routine eye examination to rule out diseases that can affect refraction, 250,980 eligible students from primary, middle and high schools were enrolled in the survey. Then the uncorrected distant and near visual acuity of each eye were measured. Categories of schools, districts, grades, eye exercises and sports time were also documented and analyzed.Results: The overall prevalence of reduced UCDVA was 51.8% (95% confidence interval [CI]: 51.6%-52.0%) in 6 districts of Changsha. Results of individual districts were as follows: Furong district 59.9%(95% CI: 57.9%-61.8%), Tianxin district 62.3%(95% CI: 60.5%-64.0%), Wangcheng district 47.8%(95% CI: 46.8%-48.8%), Kaifu district 58.5%(95% CI: 58.0%-58.9%), Yuhua district 47.0%(95% CI: 46.7%-47.4%) and Yuelu district 52.6%(95% CI: 52.3%-52.9%). The proportion of normal VA is seen to decrease from primary grade 3. The proportion of mildly reduced UCDVA is higher in primary grade 1 and 2. The proportion of moderately reduced UCDVA remains similar during 12 grades. The proportion of severely reduced UCDVA increases with grades. Multivariate analysis shows that the prevalence of reduced UCDVA is higher in key schools (risk ratio [RR]= 1.47, 95% CI 1.44-1.50) than non-key schools. Conclusions: According to the existing data analysis results, the prevalence of reduced UCDVA among primary, middle and high school students in Changsha is very high. Some effective measures need to be taken to prevent it.

scholarly journals Systematic Review on Which Analytics and Learning Methodologies Are Applied in Primary and Secondary Education in the Learning of Robotics Sensors

Sensors ◽  
2020 ◽  
Vol 21 (1) ◽  
pp. 153
Author(s):  
Daniel Amo ◽  
Paul Fox ◽  
David Fonseca ◽  
César Poyatos
Keyword(s):  
Systematic Review ◽  
Secondary Education ◽  
Secondary School ◽  
Learning Analytics ◽  
Secondary School Students ◽  
Project Based Learning ◽  
Educational Robotics ◽  
School Students ◽  
Primary And Secondary Education ◽  
Primary And Secondary School

Robotics technology has become increasingly common both for businesses and for private citizens. Primary and secondary schools, as a mirror of societal evolution, have increasingly integrated science, technology, engineering and math concepts into their curricula. Our research questions are: “In teaching robotics to primary and secondary school students, which pedagogical-methodological interventions result in better understanding and knowledge in the use of sensors in educational robotics?”, and “In teaching robotics to primary and secondary school students, which analytical methods related to Learning Analytics processes are proposed to analyze and reflect on students’ behavior in their learning of concepts and skills of sensors in educational robotics?”. To answer these questions, we have carried out a systematic review of the literature in the Web of Science and Scopus databases regarding robotics sensors in primary and secondary education, and Learning Analytics processes. We applied PRISMA methodology and reviewed a total of 24 articles. The results show a consensus about the use of the Learning by Doing and Project-Based Learning methodologies, including their different variations, as the most common methodology for achieving optimal engagement, motivation and performance in students’ learning. Finally, future lines of research are identified from this study.

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