Abstract
Purpose :
To explore the changes in cylinder power and corneal astigmatism in myopic children wearing spectacle lenses with highly aspherical lenslets (HAL) and to compare these findings with those observed in myopic children wearing single-vision spectacle lenses (SVL).
Methods :
Children aged 8 to 13 years with myopia between -0.75 D and -4.75 D were randomly assigned to wear HAL or SVL for two years. Cycloplegic autorefraction, including spherical equivalent refraction (SER) and cylinder power, axial length (AL), and corneal curvature radius were obtained every 6 months. The two-year changes were compared between groups.
Results :
A total of 103 eyes in 52 children from the HAL group and 98 eyes in 49 children from the SVL group completed all examinations and were included in the analysis. The HAL group exhibited significantly slower myopia progression (SER, -0.69D, 95% CI [-0.81, -0.57] vs. -1.38D, 95% CI [-1.50, -1.26], p < 0.001), and change in AL (0.34mm, 95% CI [0.29, 0.39] vs. 0.67mm, 95% CI [0.62, 0.72], p < 0.001) compared to the SVL group. No significant difference was observed between the SVL and HAL groups in terms of changes in cylinder power (-0.46D, 95%CI [-0.54, -0.38] vs. -0.51D, 95%CI [-0.61, -0.41], p=0.43) or corneal astigmatism (-0.29D, 95%CI [-0.38, -0.20] vs. -0.39D, 95%CI [-0.49, -0.27], p=0.14) after two years.
Conclusions :
Wearing HAL for two years had no significant impact on cylinder power and corneal astigmatism compared to SVL.
This abstract was presented at the 2024 ARVO Annual Meeting, held in Seattle, WA, May 5-9, 2024.