Mirror symmetry of higher order aberrations between right and left eyes
Introduction: There is evidence that certain measures of visual function show some type of relationship between right and left eyes in the same individual. Similarly, particular ocular maladies may be related, or be symmetric, in the right and left eyes of the same person. There is also evidence t...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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AOSIS
2014-08-01
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| Series: | African Vision and Eye Health |
| Subjects: | |
| Online Access: | https://avehjournal.org/index.php/aveh/article/view/6 |
| _version_ | 1818933543956381696 |
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| author | M. Oberholzer W.D.H. Gillan A. Rubin |
| author_facet | M. Oberholzer W.D.H. Gillan A. Rubin |
| author_sort | M. Oberholzer |
| collection | DOAJ |
| description | Introduction: There is evidence that certain measures of visual function show some type of relationship between right and left eyes in the same individual. Similarly, particular ocular maladies may be related, or be symmetric, in the right and left eyes of the same person. There is also evidence to suggest that certain relationships do not exist between eyes in an individual. For example, diseases such as glaucoma are often asymmetric in their progression in the two eyes of an afflicted individual. Inter-ocular mirror symmetry between right and left eyes, when considering ocular wave-front aberrations (WAs), has been shown to exist by some authors. This study investigates whether mirror symmetry of high order aberrations (HOAs) exists between the right and left eyes in a cohort of South African subjects.
Method: Third to 5th order Zernike coefficients (HOAs) were measured on both eyes of 66 subjects (132 eyes) using a Zywave aberrometer. A total of 15 Zernike coefficients for each eye were obtained. Mirror symmetry was investigated using correlation coefficients between the various measurements obtained from each eye.
Results: Pearson product-moment correlation coefficients provide evidence that the majority of the 15 Zernike coefficients suggest the presence of mirror symmetry between right and left eyes of the 66 subjects. Examples of individual scatter plots comparing right and left eyes are presented.
Conclusion: The results of this study suggest that mirror symmetry exists in the HOAs obtained from the 132 eyes measured and thus care should be exercised when combining eyes of individuals for analysis. (S Afr Optom 2013 73(1) 39-44) |
| first_indexed | 2024-12-20T04:50:04Z |
| format | Article |
| id | doaj.art-42258d1e54bd400dae22a39b9cc57549 |
| institution | Directory Open Access Journal |
| issn | 2413-3183 2410-1516 |
| language | English |
| last_indexed | 2024-12-20T04:50:04Z |
| publishDate | 2014-08-01 |
| publisher | AOSIS |
| record_format | Article |
| series | African Vision and Eye Health |
| spelling | doaj.art-42258d1e54bd400dae22a39b9cc575492022-12-21T19:52:53ZengAOSISAfrican Vision and Eye Health2413-31832410-15162014-08-01731394410.4102/aveh.v73i1.66Mirror symmetry of higher order aberrations between right and left eyesM. Oberholzer0W.D.H. Gillan1A. Rubin2Department of Optometry, School of Allied Health Professions, Faculty of Health Sciences, University of the Free StateDepartment of Optometry, Faculty of Health Sciences, University of JohannesburgDepartment of Optometry, Faculty of Health Sciences, University of JohannesburgIntroduction: There is evidence that certain measures of visual function show some type of relationship between right and left eyes in the same individual. Similarly, particular ocular maladies may be related, or be symmetric, in the right and left eyes of the same person. There is also evidence to suggest that certain relationships do not exist between eyes in an individual. For example, diseases such as glaucoma are often asymmetric in their progression in the two eyes of an afflicted individual. Inter-ocular mirror symmetry between right and left eyes, when considering ocular wave-front aberrations (WAs), has been shown to exist by some authors. This study investigates whether mirror symmetry of high order aberrations (HOAs) exists between the right and left eyes in a cohort of South African subjects. Method: Third to 5th order Zernike coefficients (HOAs) were measured on both eyes of 66 subjects (132 eyes) using a Zywave aberrometer. A total of 15 Zernike coefficients for each eye were obtained. Mirror symmetry was investigated using correlation coefficients between the various measurements obtained from each eye. Results: Pearson product-moment correlation coefficients provide evidence that the majority of the 15 Zernike coefficients suggest the presence of mirror symmetry between right and left eyes of the 66 subjects. Examples of individual scatter plots comparing right and left eyes are presented. Conclusion: The results of this study suggest that mirror symmetry exists in the HOAs obtained from the 132 eyes measured and thus care should be exercised when combining eyes of individuals for analysis. (S Afr Optom 2013 73(1) 39-44)https://avehjournal.org/index.php/aveh/article/view/6Mirror symmetryaberrationsinter- ocular mirror symmetry |
| spellingShingle | M. Oberholzer W.D.H. Gillan A. Rubin Mirror symmetry of higher order aberrations between right and left eyes African Vision and Eye Health Mirror symmetry aberrations inter- ocular mirror symmetry |
| title | Mirror symmetry of higher order aberrations between right and left eyes |
| title_full | Mirror symmetry of higher order aberrations between right and left eyes |
| title_fullStr | Mirror symmetry of higher order aberrations between right and left eyes |
| title_full_unstemmed | Mirror symmetry of higher order aberrations between right and left eyes |
| title_short | Mirror symmetry of higher order aberrations between right and left eyes |
| title_sort | mirror symmetry of higher order aberrations between right and left eyes |
| topic | Mirror symmetry aberrations inter- ocular mirror symmetry |
| url | https://avehjournal.org/index.php/aveh/article/view/6 |
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