Higher-Order Aberrations in Myopic Eyes
Purpose: To evaluate the correlation between refractive error and higher-order aberrations (HOAs) in patients with myopic astigmatism. Methods: HOAs were measured using the Zywave II aberrometer over a 6 mm pupil. Correlations between HOAs and myopia, astigmatism, and age were analyzed. Results: O...
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| Format: | Article |
| Language: | English |
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Knowledge E
2010-01-01
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| Series: | Journal of Ophthalmic & Vision Research |
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| Online Access: | http://www.jovr.org/article.asp?issn=2008-322X;year=2010;volume=5;issue=1;spage=3;epage=9;aulast=Karimian |
| _version_ | 1811323389678190592 |
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| author | Farid Karimian Sepehr Feizi Azade Doozande |
| author_facet | Farid Karimian Sepehr Feizi Azade Doozande |
| author_sort | Farid Karimian |
| collection | DOAJ |
| description | Purpose: To evaluate the correlation between refractive error and higher-order aberrations (HOAs) in patients with myopic astigmatism.
Methods: HOAs were measured using the Zywave II aberrometer over a 6 mm pupil. Correlations between HOAs and myopia, astigmatism, and age were analyzed.
Results: One hundred and twenty-six eyes of 63 subjects with mean age of 26.4±5.9 years were studied. Mean spherical equivalent refractive error and refractive astigmatism were -4.94±1.63 D and 0.96±1.06 D, respectively. The most common higher-order aberration was primary horizontal trefoil with mean value of 0.069±0.152 μm followed by spherical aberration (-0.064±0.130 μm) and primary vertical coma (-0.038±0.148 μm). As the order of aberration increased from third to fifth, its contribution to total HOA decreased: 53.9% for third order, 31.9% for fourth order, and 14.2% for fifth order aberrations. Significant correlations were observed between spherical equivalent refractive error and primary horizontal coma (R=0.231, P=0.022), and root mean square (RMS) of spherical aberration (R=0.213, P=0.031); between astigmatism and RMS of total HOA (R=0.251, P=0.032), RMS of fourth order aberration (R=0.35, P<0.001), and primary horizontal coma (R=0.314, P=0.004). Spherical aberration (R=0.214, P=0.034) and secondary vertical coma (R=0.203, P=0.031) significantly increased with age.
Conclusion: Primary horizontal trefoil, spherical aberration and primary vertical coma are the predominant higher-order aberrations in eyes with myopic astigmatism. |
| first_indexed | 2024-04-13T13:54:18Z |
| format | Article |
| id | doaj.art-42c5e5466c854734a3450d33086aa328 |
| institution | Directory Open Access Journal |
| issn | 2008-322X |
| language | English |
| last_indexed | 2024-04-13T13:54:18Z |
| publishDate | 2010-01-01 |
| publisher | Knowledge E |
| record_format | Article |
| series | Journal of Ophthalmic & Vision Research |
| spelling | doaj.art-42c5e5466c854734a3450d33086aa3282022-12-22T02:44:15ZengKnowledge EJournal of Ophthalmic & Vision Research2008-322X2010-01-015139Higher-Order Aberrations in Myopic EyesFarid KarimianSepehr FeiziAzade DoozandePurpose: To evaluate the correlation between refractive error and higher-order aberrations (HOAs) in patients with myopic astigmatism. Methods: HOAs were measured using the Zywave II aberrometer over a 6 mm pupil. Correlations between HOAs and myopia, astigmatism, and age were analyzed. Results: One hundred and twenty-six eyes of 63 subjects with mean age of 26.4±5.9 years were studied. Mean spherical equivalent refractive error and refractive astigmatism were -4.94±1.63 D and 0.96±1.06 D, respectively. The most common higher-order aberration was primary horizontal trefoil with mean value of 0.069±0.152 μm followed by spherical aberration (-0.064±0.130 μm) and primary vertical coma (-0.038±0.148 μm). As the order of aberration increased from third to fifth, its contribution to total HOA decreased: 53.9% for third order, 31.9% for fourth order, and 14.2% for fifth order aberrations. Significant correlations were observed between spherical equivalent refractive error and primary horizontal coma (R=0.231, P=0.022), and root mean square (RMS) of spherical aberration (R=0.213, P=0.031); between astigmatism and RMS of total HOA (R=0.251, P=0.032), RMS of fourth order aberration (R=0.35, P<0.001), and primary horizontal coma (R=0.314, P=0.004). Spherical aberration (R=0.214, P=0.034) and secondary vertical coma (R=0.203, P=0.031) significantly increased with age. Conclusion: Primary horizontal trefoil, spherical aberration and primary vertical coma are the predominant higher-order aberrations in eyes with myopic astigmatism.http://www.jovr.org/article.asp?issn=2008-322X;year=2010;volume=5;issue=1;spage=3;epage=9;aulast=KarimianHigher-Order Aberrations; Myopia; Zywave Aberrometer; Hartmann-Shack Aberrometer |
| spellingShingle | Farid Karimian Sepehr Feizi Azade Doozande Higher-Order Aberrations in Myopic Eyes Journal of Ophthalmic & Vision Research Higher-Order Aberrations; Myopia; Zywave Aberrometer; Hartmann-Shack Aberrometer |
| title | Higher-Order Aberrations in Myopic Eyes |
| title_full | Higher-Order Aberrations in Myopic Eyes |
| title_fullStr | Higher-Order Aberrations in Myopic Eyes |
| title_full_unstemmed | Higher-Order Aberrations in Myopic Eyes |
| title_short | Higher-Order Aberrations in Myopic Eyes |
| title_sort | higher order aberrations in myopic eyes |
| topic | Higher-Order Aberrations; Myopia; Zywave Aberrometer; Hartmann-Shack Aberrometer |
| url | http://www.jovr.org/article.asp?issn=2008-322X;year=2010;volume=5;issue=1;spage=3;epage=9;aulast=Karimian |
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