The relation between birth size and the results of refractive error and biometry measurements in children

Aim: To examine the association of birth parameters with biometry and refraction in Singapore Chinese schoolchildren. Methods: Chinese children aged 7–9 years (n = 1413) from three schools in Singapore were recruited. Birth parameter information on birth weight, head circumference, length at birth, and gestational age were obtained from standard hospital records. Cycloplegic autorefraction, keratometry and biometry measures (axial length, vitreous chamber depth, lens thickness, and anterior chamber depth) were obtained. Results: Across the normal birthweight range (2.0–4.9 kg), children with birth weights ⩾4.0 kg had longer axial lengths (adjusted mean 23.65 mm versus 23.16 mm), compared with children with birth weights