Related Experiment Video
Updated: Jan 27, 2026

14:15
Measurement Of Neuromagnetic Brain Function In Pre-school Children With Custom Sized MEG
Published on: February 19, 2010
17.3K
Visual implications of digital device usage in school children: a cross-sectional study
Parul Ichhpujani1, Rohan Bir Singh1,2, William Foulsham3
1Department of Ophthalmology, Government Medical College and Hospital, Sector 32, Chandigarh, India.
BMC Ophthalmology
|March 15, 2019
Summary
Digital device use is increasing among Indian school children, leading to a rise in digital eyestrain. Reading habits and preferred postures significantly correlate with experiencing eyestrain in adolescents.
Area of Science:
- Ophthalmology
- Pediatric Health
- Digital Health
Background:
- Adolescent digital device usage is rapidly increasing.
- This trend poses new challenges for children's eye health.
- Understanding usage patterns and associated risks is crucial.
Purpose of the Study:
- To evaluate digital device use among urban Indian school children (aged 11-17).
- To assess reading habits and their relation to device usage.
- To determine the prevalence of digital eyestrain in this population.
Main Methods:
- A survey was conducted among 576 urban school adolescents.
- Data collected included electronic device usage and factors influencing ocular symptoms.
- Reading postures and preferences were also recorded.
Main Results:
- Daily digital device use increased from 20% at age 11 to 50% at age 17.
- One-third of students used digital devices for reading instead of textbooks.
- A significant association was found between reading while lying down and experiencing eyestrain (27%).
- Overall, 18% of students reported eyestrain after using digital devices.
Conclusions:
- Increased digital device use among adolescents contributes to early-onset digital eyestrain.
- Reading postures, particularly lying down, are linked to higher rates of eyestrain.
- Further research is needed to address the growing issue of digital eyestrain in school children.
Related Concept Videos
Cross-Sectional Research
12.5K
In cross-sectional research, a researcher compares multiple segments of the population at the same time. If they were interested in people's dietary habits, the researcher might directly compare different groups of people by age. Instead of following a group of people for 20 years to see how their dietary habits changed from decade to decade, the researcher would study a group of 20-year-old individuals and compare them to a group of 30-year-old individuals and a group of 40-year-old...
12.5K
Profile Leveling and Cross Sections
1.6K
Profile leveling and cross-sections are surveying methods used to determine and document terrain elevations for infrastructure projects such as highways, railroads, canals, and pipelines. These methods provide data for earthwork planning and alignment of proposed routes. Profile leveling involves measuring elevations along a fixed line to create a vertical terrain profile. A surveyor sets up a leveling instrument at the benchmark (BM) and records a backsight (BS) to determine the...
1.6K
Spinal Cord: Cross-sectional Anatomy
4.6K
The cross-sectional anatomy of the spinal cord offers a detailed view of its complex structure and function within the central nervous system. At the core of the spinal cord lies the gray matter, characterized by its butterfly or "H"-shaped appearance in cross-section. This central region is enveloped by white matter, with the overall structure divided into symmetrical halves by the dorsal median sulcus and the ventral median fissure.
Gray Matter and its Components
Central to the gray matter is...
Gray Matter and its Components
Central to the gray matter is...
4.6K
Crossing Over
171.7K
Unlike mitosis, meiosis aims for genetic diversity in its creation of haploid gametes. Dividing germ cells first begin this process in prophase I, where each chromosome—replicated in S phase—is now composed of two sister chromatids (identical copies) joined centrally.
The homologous pairs of sister chromosomes—one from the maternal and one from the paternal genome—then begin to align alongside each other lengthwise, matching corresponding DNA positions in a process...
The homologous pairs of sister chromosomes—one from the maternal and one from the paternal genome—then begin to align alongside each other lengthwise, matching corresponding DNA positions in a process...
171.7K
Crossing Over
6.4K
Crossing over is the exchange of genetic information between homologous chromosomes during prophase I of meiosis I. Genetic recombination gives rise to allelic diversity in the newly formed daughter cells. In humans, crossing over produces genetically distinct haploid egg and sperm cells that undergo fertilization to produce unique offspring. Before cell division starts, the germ cell’s chromosome(s) undergo duplication in the S phase of the cell cycle. As the cells enter prophase I,...
6.4K
Monohybrid Crosses
239.3K
Overview
239.3K

