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Ocular higher-order aberrations in a school children population.
George Papamastorakis1, Sophia Panagopoulou1, Militadis K Tsilimbaris2
1Institute of Vision and Optics (IVO), University of Crete, Greece.
Journal of Optometry
|October 8, 2014
Summary
Ocular higher-order aberrations were measured in 557 children aged 10-15. Spherical aberration increased with age, suggesting a link to eye growth and myopia development.
Area of Science:
- Ophthalmology
- Optometry
- Pediatric Eye Care
Background:
- Ocular higher-order aberrations (HOAs) are crucial for visual quality.
- Understanding HOA development in children is essential for early detection of visual impairments.
Purpose of the Study:
- To investigate the prevalence and characteristics of ocular HOAs in primary and secondary school children.
- To analyze age-related changes in HOAs within this pediatric population.
Main Methods:
- A cohort of 557 children (aged 10-15 years) from Greece participated.
- Ocular aberrations were measured using a wavefront aberrometer under mesopic conditions (4 lux).
- Wavefront analysis was performed for a 5mm pupil, with statistical analysis on the right eye.
Main Results:
- Most HOAs did not significantly differ from zero, except for vertical coma, horizontal coma, oblique trefoil, and spherical aberration.
- Spherical aberration showed a notable age-related increase, from 0.007μm in the youngest group to 0.030μm in the oldest.
- Significant differences in oblique astigmatism and third-order coma were also observed across age groups.
Conclusions:
- The observed low levels of ocular spherical aberration in children may be linked to lenticular aberrations and the lens's gradient refractive index.
- Evaluating spherical aberration during eye growth could enhance understanding of myopia development mechanisms.
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