Relative peripheral refraction with accommodation in 6- to 11-year-olds: baseline findings from the Stockholm Myopia Study

This study compares image quality on the peripheral retina for far and near vision in schoolchildren. Biometric data and simultaneous foveal and peripheral ( <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mo>±</mml:mo> <mml:msup><mml:mn>25</mml:mn> <mml:mrow><mml:mo>∘</mml:mo> </mml:mrow> </mml:msup> </mml:math> horizontal field) wavefront data for two levels of accommodation (0.22 D and 5 D) were collected from 31 children aged 6 to 11 years. Relative peripheral refraction (RPR) was found to be larger and more negative in the nasal visual field than in the temporal. This difference increased with accommodation. Furthermore, correlations between image quality and biometric parameters were investigated. The results highlight the importance of peripheral image quality during near work for myopia research. The data presented also form the baseline measurements of the Stockholm Myopia Study, which is a longitudinal pilot study on ocular growth and peripheral image quality in schoolchildren in Stockholm, Sweden.