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September 16, 2024
By Dwight Akerman, OD, MBA, FAAO, FBCLA, FIACLE
Photo Credit: Getty Images
This study compares two-year changes in cylinder power in myopic children wearing spectacle lenses with highly aspherical lenslets* and single-vision spectacle lenses.
Bao, J., Huang, Y., Li, X., Lim, E. W., Drobe, B., & Chen, H. (2024) aimed to investigate the changes in cylinder power and corneal astigmatism in myopic children wearing spectacle lenses with highly aspherical lenslets (HAL) compared to those wearing single-vision spectacle lenses (SVL) over a period of two years. The research included 52 children wearing HAL and 49 children wearing SVL, with ages ranging from 8 to 13 years and myopia between -0.75D and -4.75D.
The study involved obtaining cycloplegic autorefraction, axial length, and corneal curvature radius measurements every six months for the two-year duration. The results revealed that the group wearing HAL spectacle lenses demonstrated significantly slower myopia progression and change in axial length compared to the SVL group. However, no significant differences were observed in the changes in cylinder power and corneal astigmatism between the two groups after two years.
The findings of the study suggest that wearing spectacle lenses with highly aspherical lenslets may slow down myopia progression in myopic children compared to single-vision spectacle lenses. The research indicates the potential benefits of utilizing highly aspherical lenslets in managing myopia in children. The lack of significant impact on cylinder power and corneal astigmatism in the HAL group compared to the SVL group implies that both types of lenses are comparable in these aspects over a two-year period.
This study provides valuable insights into the effects of different types of spectacle lenses on myopic children over an extended duration, contributing to the ongoing research in myopia management. The results suggest that highly aspherical lenslets may offer advantages in controlling myopia progression, which could have significant implications for the management of myopia in pediatric patients.
In conclusion, this study by Bao et al. sheds light on the potential benefits of wearing spectacle lenses with highly aspherical lenslets in managing myopia in children. The research highlights the importance of long-term monitoring of myopia progression and the impact of different lens designs on ocular parameters. Further studies could delve deeper into the specific mechanisms through which highly aspherical lenslets may influence myopia progression and corneal astigmatism, ultimately providing more comprehensive insights into the management of myopia in pediatric patients.
Abstract
Two-Year Changes in Cylinder Power in Myopic Children Wearing Spectacle Lenses with Highly Aspherical Lenslets and Single-Vision Spectacle Lenses
Jinhua Bao; Yingying Huang; Xue Li; Ee Woon Lim; Bjorn Drobe; Hao Chen
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 six 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, which was held in Seattle, WA, May 5-9, 2024.
Bao, J., Huang, Y., Li, X., Lim, E. W., Drobe, B., & Chen, H. (2024). Two-year changes in cylinder power in myopic children wearing spectacle lenses with highly aspherical lenslets and single-vision spectacle lenses. Investigative Ophthalmology & Visual Science, 65(7), 160-160.
* Essilor Stellest lenses are based on the optical design of HAL spectacle lenses
