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Age-Related Changes in Astigmatism and Potential Causes.
Hiroyuki Namba1, Akira Sugano1, Takanori Murakami1,2
1Department of Ophthalmology and Visual Sciences, Yamagata University Faculty of Medicine, Yamagata, Japan.
Cornea
|October 10, 2020
Summary
Astigmatism, a vision defect, changes with age due to corneal alterations. Understanding its prevalence and mechanisms is key to maintaining visual function.
Area of Science:
- Ophthalmology
- Vision Science
Background:
- Astigmatism degrades image quality and impacts overall vision.
- Understanding astigmatism's prevalence, changes over time, and causes is crucial for visual health.
Purpose of the Study:
- To review and discuss findings from studies investigating astigmatism.
- To explore the prevalence, age-related shifts, and underlying mechanisms of astigmatism.
Main Methods:
- Review of existing studies on astigmatism prevalence and progression.
- Analysis of age-related changes in astigmatism, including shifts in axis.
Main Results:
- High astigmatism in childhood often resolves with emmetropization.
- Astigmatism prevalence increases with age, shifting from with-the-rule to against-the-rule.
- Corneal curvature changes are the primary driver of age-related astigmatism.
Conclusions:
- Age-related astigmatism is linked to corneal shape alterations, potentially influenced by eyelids, collagen, and muscles.
- Genetic factors may also play a role in astigmatism development.
- Technological advancements promise deeper insights into astigmatism etiology and vision quality maintenance.
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