Interocular astigmatic symmetry: A systematic review.
Raquel Salvador-Roger1, Vicente Micó1, José J Esteve-Taboada1
1Department of Optics and Optometry and Vision Sciences, University of Valencia, 46100 Burjassot, Spain.
Summary
This study on interocular astigmatic symmetry found that the isorule pattern and mirror symmetry are prevalent. Age, sex, and refractive error did not significantly influence astigmatic symmetry across populations.
Area of Science:
- Ophthalmology
- Optometry
- Genetics
Background:
- Interocular astigmatic symmetry is crucial for binocular vision.
- Understanding astigmatic patterns can inform clinical practice and research.
- Previous studies have yielded varied results regarding symmetry.
Purpose of the Study:
- To consolidate existing data on interocular astigmatic symmetry.
- To identify prevalent patterns in astigmatic symmetry.
- To explore potential influencing factors on symmetry.
Main Methods:
- Systematic literature review using the PICO framework.
- Searched PubMed, Web of Science, and Scopus databases up to September 2024.
- Included population-based studies reporting interocular astigmatic symmetry.
Main Results:
- 13 studies with 329,747 subjects from 10 countries were included.
- The isorule pattern (similar astigmatism in both eyes) was most common, except in the geriatric population.
- Mirror symmetry was the most prevalent pattern; age, sex, and refractive error showed no discernible influence.
Conclusions:
- A clear trend towards isorule pattern and mirror symmetry in interocular astigmatism was observed.
- These findings suggest a generalizable pattern of astigmatic symmetry in the population.
- Further research may explore underlying genetic or developmental factors.
Keywords:
Astigmatic symmetryAstigmatism symmetryInterocular symmetryMirror symmetryRule symmetrySystematic reviewMore Related Videos
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