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The effect of adherence to spectacle wear on early developing literacy: a longitudinal study based in a large
Alison Bruce1, Brian Kelly1, Bette Chambers2
1Bradford Institute for Health Research, Bradford Teaching Hospitals NHS Trust, Bradford, UK.
Insights
Children who consistently wear prescribed spectacles show improved visual acuity (VA) and literacy. Adherence to spectacle wear is crucial for vision development and educational outcomes in young children.
Area of Science:
- Ophthalmology
- Developmental Pediatrics
- Educational Psychology
Background:
- Vision screening at age 4-5 years identifies children needing corrective lenses.
- Adherence to spectacle wear is critical for maximizing visual potential.
- The impact of spectacle adherence on literacy development requires further investigation.
Purpose of the Study:
- To determine the impact of adherence to spectacle wear on visual acuity (VA).
- To assess the effect of spectacle adherence on developing literacy in children.
- To evaluate the long-term educational implications of spectacle wear compliance.
Main Methods:
- A longitudinal study nested within the Born in Bradford birth cohort.
- Observation of 944 children (432 referred, 512 comparison) over 2 years post-vision screening.
- Annual measures of VA using crowded logMAR tests and literacy using Woodcock Reading Mastery Tests-Revised (letter identification).
Main Results:
- All children showed VA improvement with age; the adherent group demonstrated significantly greater VA improvement.
- Literacy (letter identification) was strongly associated with VA, with a reduction for each line of vision loss.
- Adherent children consistently scored higher on letter identification compared to non-adherent peers.
Conclusions:
- Early literacy is linked to visual acuity levels.
- Children adhering to spectacle wear experience improved VA and potential literacy gains.
- Non-adherence to spectacles negatively impacts both vision and educational attainment.
Objectives:
To determine the impact of adherence to spectacle wear on visual acuity (VA) and developing literacy following vision screening at age 4-5 years.
Design:
Longitudinal study nested within the Born in Bradford birth cohort.
Setting And Participants:
Observation of 944 children: 432 had failed vision screening and were referred (treatment group) and 512 randomly selected (comparison group) who had passed (<0.20 logarithm of the minimum angle of resolution (logMAR) in both eyes). Spectacle wear was observed in school for 2 years following screening and classified as adherent (wearing spectacles at each assessment) or non-adherent.
Main Outcome Measures:
Annual measures of VA using a crowded logMAR test. Literacy was measured by Woodcock Reading Mastery Tests-Revised subtest: letter identification.
Results:
The VA of all children improved with increasing age, -0.009 log units per month (95% CI -0.011 to -0.007) (worse eye). The VA of the adherent group improved significantly more than the comparison group, by an additional -0.008 log units per month (95% CI -0.009 to -0.007) (worse eye) and -0.004 log units per month (95% CI -0.005 to -0.003) in the better eye.Literacy was associated with the VA, letter identification (ID) reduced by -0.9 (95% CI -1.15 to -0.64) for every one line (0.10 logMAR) fall in VA (better eye). This association remained after adjustment for socioeconomic and demographic factors (-0.33, 95% CI -0.54 to -0.12). The adherent group consistently demonstrated higher letter-ID scores compared with the non-adherent group, with the greatest effect size (0.11) in year 3.
Conclusions:
Early literacy is associated with the level of VA; children who adhere to spectacle wear improve their VA and also have the potential to improve literacy. Our results suggest failure to adhere to spectacle wear has implications for the child's vision and education.
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