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The maturation of linear acuity and compliance with the Sonksen-Silver Acuity System in young children
A T Salt1, P M Sonksen, A Wade
1Lifespan Healthcare, Cambridge, UK.
Insights
This study assessed visual acuity in 1245 children aged 2.5 to 9 years. Results show improved visual maturation and compliance with age, providing valuable data for child vision surveillance.
Area of Science:
- Ophthalmology
- Pediatric Medicine
- Public Health
Background:
- Visual acuity development is crucial for early childhood development.
- Routine surveillance is essential for identifying potential vision impairments in children.
- Establishing age-appropriate visual norms aids in early detection and intervention.
Purpose of the Study:
- To investigate the compliance and maturation of visual acuity in a large cohort of young children.
- To establish normative data for visual acuity testing in children aged 2.5 to 9 years.
- To develop a statistical model for age-based visual acuity norms.
Main Methods:
- Investigated visual acuity compliance and maturation in 1245 children aged 2.5 to 9 years.
- Utilized routine surveillance testing methods.
- Collected data on letter matching, binocular, and monocular visual acuity measures.
Main Results:
- Compliance and maturation of visual acuity significantly increased with age.
- Children under three years showed 89% letter matching, 78% binocular, and 37% monocular measure success.
- Children over four years demonstrated near-universal success (99.9% for letter matching and binocular, 99% for monocular).
Conclusions:
- Visual acuity testing compliance and maturation improve significantly with age in early childhood.
- The developed statistical model provides age-specific norms for visual acuity.
- These findings support the use of normative data in child vision surveillance and diagnostic teams.
Abstract:
The compliance and maturation of visual acuity of 1245 2 1/2- to nine-year-olds was investigated. Testing was undertaken as part of routine surveillance. Ability to letter match, to achieve a binocular measure and to achieve monocular measures for children under three years was 89, 78 and 37 per cent, for children aged three to four years 97, 91 and 66 per cent, and for children over four years 99.9, 99.9 and 99, respectively. A statistical model was developed to give acuity norms by age for use by surveillance and diagnostic teams.