Hyperopia and emergent literacy of young children: pilot study

Area of Science:

• Pediatric Ophthalmology
• Developmental Psychology
• Educational Neuroscience

Background:

• Emergent literacy skills are foundational for academic success.
• Uncorrected refractive errors, such as hyperopia, may impact cognitive development.
• Early identification of factors affecting literacy is crucial for intervention.

Purpose of the Study:

• To compare emergent literacy skills in children with uncorrected hyperopia versus emmetropia.
• To investigate the relationship between hyperopia and various aspects of early literacy development.

Main Methods:

• Recruited children with hyperopia (n=13) and emmetropia (n=19), aged 4-7 years.
• Assessed visual acuity (VA), emergent literacy (letter/word recognition, vocabulary, phonological awareness, emergent orthography), and visual cognitive skills.
• Collected parent-reported data on demographics and home literacy environment.

Main Results:

• Hyperopic children showed significantly poorer performance in letter/word recognition, receptive vocabulary, and emergent orthography.
• Crowding effects in visual acuity were more pronounced in the left eye of hyperopic children.
• No significant differences were found in phonological awareness or visual-motor/perceptual skills between groups.

Conclusions:

• Uncorrected hyperopia in young children is associated with deficits in key emergent literacy skills beyond phonological awareness.
• The complex relationship between hyperopia and literacy acquisition warrants further investigation, including causality and long-term outcomes.
• Visual cognitive skills and family factors did not explain the observed literacy differences in this pilot study.