Longitudinal changes of axial length and height are associated and concomitant in children

Abstract

Purpose. To examine the association between the longitudinal changes of axial length (AL) and height in Chinese children. Methods. The study participants were recruited from the Guangzhou Twin Registry. AL and height were measured every year from 2006 to 2008. AL was measured using partial coherence laser interferometry. Height was measured with the participants standing without shoes. Bivariate correlation coefficients and a multivariate generalized regression model were used to calculate the association between the changes of AL and height. Data from the first-born twins were selected to present the results. The right eye was arbitrarily selected to represent AL of the specific individual...