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Updated: Jul 5, 2026

A Method to Quantify Visual Information Processing in Children Using Eye Tracking
Published on: July 9, 2016
Effect of breastfeeding and sociodemographic factors on visual outcome in childhood and adolescence
Alicja R Rudnicka1, Christopher G Owen, Marcus Richards
1Division of Community Health Sciences, St George's, University of London, London, United Kingdom. arudnick@sgul.ac.uk
Insights
Infant feeding does not influence childhood vision. Parental education, maternal age, birth weight, and birth order are linked to myopia development, indicating other environmental factors are key.
Area of Science:
- Ophthalmology
- Pediatrics
- Public Health
Background:
- Childhood myopia is a growing concern.
- Early life factors like breastfeeding and birth weight are hypothesized to influence myopia development.
- Understanding these early influences is crucial for prevention strategies.
Purpose of the Study:
- To investigate the relationship between various early life factors and the development of reduced unaided vision (myopia) in childhood and adolescence.
- To analyze the impact of infant feeding, parental education, maternal age, birth weight, sex, birth order, and socioeconomic status on visual acuity.
Main Methods:
- Utilized data from three large British birth cohorts (1946, 1958, 1970) with over 42,000 participants.
- Employed fixed-effects meta-analyses to pool adjusted odds ratios for reduced vision (6/12 or worse) at ages 10-11 and 15-16 years.
- Controlled for multiple potential confounding factors in the analysis.
Main Results:
- Breastfeeding rates declined across cohorts, but showed no association with vision outcomes.
- Parental education, increased maternal age, higher birth order (more older siblings), and being female were associated with increased odds of reduced vision.
- Higher birth weight was associated with decreased odds of reduced vision in childhood, but this association was null in adolescence.
Conclusions:
- Infant feeding practices do not appear to significantly impact visual development or myopia.
- Parental education, maternal age, sex, and birth order are consistently associated with reduced vision, highlighting the role of broader environmental influences.
- Further research into these environmental factors is needed to understand and mitigate myopia progression in early life.
Background:
It has been suggested that early life factors, including breastfeeding and birth weight, program childhood myopia.
Objective:
We examined the relation of reduced unaided vision (indicative of myopia) in childhood and adolescence with infant feeding, parental education, maternal age at birth, birth weight, sex, birth order, and socioeconomic status.
Design:
Three British cohorts recruited infants born in 1946 (n = 5362), 1958 (n = 18,558), and 1970 (n = 16,567). Adjusted odds ratios (ORs) for unaided vision of 6/12 or worse at ages 10-11 and 15-16 y from each cohort were pooled by using fixed-effects meta-analyses.
Results:
The prevalence of reduced vision ranged from 4.4% to 6.5% at 10-11 y and from 9.4% to 11.4% at 16 y, with marginally higher levels in later cohorts. Breastfeeding declined across successive cohorts (65%, 43%, and 22% in those breastfed for >1 mo, respectively). Pooled ORs showed no associations between infant feeding and vision after adjustment at either age. Parental education (OR: 1.48, high versus low education; 95% CI: 1.23, 1.79), maternal age (OR: 1.10, per 5-y increase; 95% CI: 1.04, 1.17), birth weight (OR: 0.85, per 1-kg rise; 95% CI: 0.76, 0.95), number of older siblings (OR: 0.89, per older sibling; 95% CI: 0.83, 0.94), and sex (OR: 1.10, girls versus boys; 95% CI: 0.98, 1.23) were related to adverse visual outcome in childhood. Stronger associations were observed in adolescence, except that the association with birth weight was null.
Conclusions:
Infant feeding does not appear to influence visual development. Consistent associations of reduced vision with parental education, sex, maternal age, and birth order suggest that other environmental factors are important for visual development and myopia in early life.
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