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Accepted (AM)Open Access (License Unspecified), Open
Journal article
Axial Elongation in Myopic Children and its Association With Myopia Progression in the Correction of Myopia Evaluation Trial
Eye & contact lens, v 44(4), pp 248-259
Jul 2018
PMID: 29923883
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Describe axial elongation using 14-year longitudinal data in a large, ethnically diverse group of myopic children, estimate age and axial length (AL) at stabilization, and evaluate associations between the progression and stabilization of AL and myopia.
Axial length was measured by A-scan ultrasonography annually. Axial length data were fit with individual polynomial functions and curve-based parameters (AL at stabilization and age at stabilization when annual rate of axial elongation ≤0.06 mm) were estimated. For myopia progression, noncycloplegic spherical equivalent refractions were fit with Gompertz functions.
Four hundred thirty-one participants, with AL and myopia data fit successfully, were classified into four cohorts: Younger (n=30); Older (n=334); AL Stabilized at Baseline (n=19); and AL Not Stabilized (n=48). At AL stabilization, for participants in the Younger and Older Cohorts, mean (SD) age and AL were 16.3 (2.4) years and 25.2 (0.9) mm, respectively. No associations were found between age at AL stabilization and ethnicity, sex, or number of myopic parents. At stabilization, sex and number of myopic parents (both P<0.003), but not ethnicity, were significantly associated with AL. Axial length and myopia progression curves were highly correlated overall (all r>0.77, P<0.0001). However, unlike AL, the amount of myopia did not differ significantly between males and females.
In most of the participants, AL increased rapidly at younger ages and then slowed and stabilized. The close association between growth and stabilization of AL and myopia is consistent with the suggestion that axial elongation is the primary ocular component in myopia progression and stabilization.
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Details
- Title
- Axial Elongation in Myopic Children and its Association With Myopia Progression in the Correction of Myopia Evaluation Trial
- Creators
- Wei HouThomas T NortonLeslie HymanJane GwiazdaCOMET GroupMitchell Scheiman - Pennsylvania College of Optometry (PCO)
- Publication Details
- Eye & contact lens, v 44(4), pp 248-259
- Publisher
- Lippincott
- Grant note
- U10 EY011756 / NEI NIH HHS U10 EY011740 / NEI NIH HHS U10 EY011755 / NEI NIH HHS U10 EY011805 / NEI NIH HHS
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Pennsylvania College of Optometry (PCO)
- Web of Science ID
- WOS:000441178800008
- Scopus ID
- 2-s2.0-85049385806
- Other Identifier
- 991021900610804721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Ophthalmology