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Published on: September 20, 2024
Higher order monochromatic aberrations of the human infant eye
1Indiana University School of Optometry, Bloomington, IN, USA. jinwang@indiana.edu
Insights
Infant eye aberrations are slightly higher than predicted but may influence visual development and eye growth control. This study compares infant and adult eye aberrations using wavefront sensing.
Area of Science:
- Ophthalmology
- Developmental Biology
- Optics
Background:
- Monochromatic optical aberrations impact retinal image quality.
- Postnatal eye development may be influenced by visual aberrations.
- Infant visual performance and eye growth control signals are linked to aberrations.
Purpose of the Study:
- To compare monochromatic optical aberrations in human infant eyes (5-7 weeks old) with adult subjects.
- To investigate the role of infant eye aberrations in visual development and eye growth regulation.
Main Methods:
- Utilized a Shack-Hartmann wavefront sensor for data collection.
- Employed a model of an adultlike infant eye to account for size differences.
- Compared aberration data between 5-7 week old infants and adult subjects.
Main Results:
- Infant eye higher-order aberrations were found to be less than 2 times greater than predicted for an adultlike infant eye.
- Aberration levels in 5-7 week old infants were quantified.
Conclusions:
- Infant eye aberrations are comparable to predictions for their age.
- Findings provide insights into visual performance and eye growth control signals in infants.
Abstract:
The monochromatic optical aberrations of the eye degrade retinal image quality. Any significant aberrations during postnatal development could contribute to infants' immature visual performance and provide signals for the control of eye growth. Aberrations of human infant eyes from 5 to 7 weeks old were compared with those of adult subjects using a model of an adultlike infant eye that accounted for differences in both eye and pupil size. Data were collected using the COAS Shack-Hartmann wavefront sensor. The results demonstrate that the higher order aberrations of the 5-to-7-week-old eye are less than a factor of 2 greater than predicted for an adultlike infant eye of this age. The data are discussed in the context of infants' visual performance and the signals available for controlling growth of the eye.
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