Exploring The Role of Decentered Orthokeratology Lenses in Controlling Myopia: A Longitudinal Study
Keywords:
Orthokeratology, Myopia control, Axial length growth, Lens decentration, Myopia progression, ChildrenAbstract
Purpose: This study aimed to evaluate the impact of orthokeratology (OK) lens decentration on myopia control, focusing specifically on its effect on axial length (AL) growth in children. We compared the outcomes of centrated versus decentered OK lenses over a 12-month period.
Methods: In this retrospective study, 30 children (15 males, 15 females, mean age 9.3 ± 1.51 years) were included. Each child wore OK lenses with one eye fitted centrically and the other with decentered lenses for over 12 months. All participants had uncorrected visual acuity (UCVA) better than 0.1 logMAR and no significant ocular complications. We assessed refractive parameters, axial length growth, and myopia control efficiency, considering both the direction and degree of lens decentration.
Results: The average decentration distance in the decentered group was 0.73 ± 0.25 mm. Axial length growth was significantly slower in the decentered group (0.20 ± 0.24 mm per year) compared to the centrated group (0.29 ± 0.20 mm per year) (p < 0.05). The efficiency of myopia control, determined by the ratio of AL growth between the decentered and centrated eyes, was 0.69 ± 0.50 for the temporal decentration group and 0.75 ± 0.52 for the other direction decentration group, showing no significant directional effect (p > 0.05). No significant correlation was observed between the degree of decentration and myopia control efficiency within the temporal decentration group.
Conclusions: This study suggests that mild decentration of OK lenses may be more effective in slowing myopia progression than centration. There were no significant differences between temporal and other direction decentration, and no strong correlation between the degree of decentration and myopia control efficiency. These findings indicate that even modest lens decentration could be a promising strategy for myopia management in clinical practice..
Downloads
References
Cho, P., & Cheung, S. W. (2012). The long-term effect of orthokeratology on myopia progression. Clinical and Experimental Optometry, 95(6), 612-618.
Cheng, H. H., Cheng, C. Y., & Lin, M. C. (2021). The influence of decentration on the effectiveness of orthokeratology in myopia control. Investigative Ophthalmology & Visual Science, 62(7), 14.
Kollbaum, P. S., et al. (2013). Orthokeratology and its impact on myopia progression. Optometry and Vision Science, 90(1), 30-40.
Li, Y., et al. (2016). The effect of orthokeratology lens decentration on axial length progression in children. Journal of Cataract and Refractive Surgery, 42(2), 271-278.
Lin, L. L., et al. (2004). Prevalence of myopia in Taiwanese schoolchildren: 1983 to 2000. Ophthalmology, 111(5), 787-793.
Liu, Y., et al. (2019). Temporal decentration of orthokeratology lenses and its impact on myopia control. Cornea, 38(8), 957-962.
Lim, L. S., et al. (2013). Myopia and risk of glaucoma: A systematic review and meta-analysis. Ophthalmology, 120(1), 101-109.
Morgan, I. G., et al. (2012). The epidemiology of myopia. The Clinical and Experimental Optometry, 95(6), 419-428.
Swarbrick, H. A. (2006). Orthokeratology review and update. Clinical and Experimental Optometry, 89(4), 205-212.
Tang, Y., et al. (2018). The influence of orthokeratology lens decentration on visual outcomes and corneal topography. Eye and Contact Lens, 44(2), 92-96.
Walline, J. J., et al. (2009). Effect of orthokeratology on myopia progression in children. Optometry and Vision Science, 86(6), 516-523.
Zhang, Y., et al. (2020). Directional effects of orthokeratology lens decentration on myopia control. Optometry and Vision Science, 97(4), 267-274.
Cheng, H. H., Cheng, C. Y., & Lin, M. C. (2021). The influence of decentration on the effectiveness of orthokeratology in myopia control. Investigative Ophthalmology & Visual Science, 62(7), 14.
Li, Y., et al. (2016). The effect of orthokeratology lens decentration on axial length progression in children. Journal of Cataract and Refractive Surgery, 42(2), 271-278.
Liu, Y., et al. (2020). Effect of orthokeratology lens decentration on myopia control: A systematic review and meta-analysis. Optometry and Vision Science, 97(5), 399-408.
Liu, Y., et al. (2019). Temporal decentration of orthokeratology lenses and its impact on myopia control. Cornea, 38(8), 957-962.
Sherwin, J. C., et al. (2014). The influence of peripheral defocus on the progression of myopia. Current Eye Research, 39(3), 232-239.
Zhao, Y., et al. (2017). The effect of orthokeratology lens decentration on axial length growth in children with myopia. Optometry and Vision Science, 94(9), 869-875.
Zhao, Y., et al. (2018). Decentration and its effect on myopia control in orthokeratology: A clinical trial. American Journal of Ophthalmology, 188, 72-79.
Zhang, Y., et al. (2019). Directional effects of orthokeratology lens decentration on myopia control. Optometry and Vision Science, 97(4), 267-274.
Downloads
Published
How to Cite
Issue
Section
License
This work is licensed under a Creative Commons Attribution 4.0 International License.
You are free to:
- Share — copy and redistribute the material in any medium or format
- Adapt — remix, transform, and build upon the material for any purpose, even commercially.
Terms:
- Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.
