Influence of Refractive Condition on Retinal Vasculature Complexity in Younger Subjects
Objective. The aim of this study was to compare the retinal vasculature complexity between emmetropia, and myopia in younger subjects. Methods. A total of 82 patients (24.12±1. 25 years) with two types of refractive conditions, myopia and emmetropia were enrolled in this study. Refraction data were...
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| Language: | English |
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Wiley
2014-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2014/783525 |
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| author | Mohd Zulfaezal Che Azemin Norsyazwani Mohamad Daud Fadilah Ab Hamid Ilyanoon Zahari Abdul Halim Sapuan |
| author_facet | Mohd Zulfaezal Che Azemin Norsyazwani Mohamad Daud Fadilah Ab Hamid Ilyanoon Zahari Abdul Halim Sapuan |
| author_sort | Mohd Zulfaezal Che Azemin |
| collection | DOAJ |
| description | Objective. The aim of this study was to compare the retinal vasculature complexity between emmetropia, and myopia in younger subjects. Methods. A total of 82 patients (24.12±1. 25 years) with two types of refractive conditions, myopia and emmetropia were enrolled in this study. Refraction data were converted to spherical equivalent refraction. These retinal images (right eyes) were obtained from NAVIS Lite Image Filing System and the vasculature complexity was measured by fractal dimension (Df), quantified using a computer software following a standardized protocol. Results. There was a significant difference (P < 0.05) in the value of Df between emmetropic (1.5666 ± 0.0160) and myopic (1.5588 ± 0.0142) groups. A positive correlation (rho = 0.260, P < 0.05) between the Df and the spherical equivalent refraction was detected in this study. Using a linear model, it was estimated that 6.7% of the variation in Df could be explained by spherical equivalent refraction. Conclusions. This study provides valuable findings about the effect of moderate to high myopia on the fractal dimension of the retinal vasculature network. These results show that myopic refraction in younger subjects was associated with a decrease in Df, suggesting a loss of retinal vessel density with moderate to high myopia. |
| format | Article |
| id | doaj-art-66bf77272ef045b79df67b3d41aefe1d |
| institution | OA Journals |
| issn | 2356-6140 1537-744X |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-66bf77272ef045b79df67b3d41aefe1d2025-08-20T02:23:41ZengWileyThe Scientific World Journal2356-61401537-744X2014-01-01201410.1155/2014/783525783525Influence of Refractive Condition on Retinal Vasculature Complexity in Younger SubjectsMohd Zulfaezal Che Azemin0Norsyazwani Mohamad Daud1Fadilah Ab Hamid2Ilyanoon Zahari3Abdul Halim Sapuan4Department of Optometry and Visual Science, Kulliyyah of Allied Health Sciences (KAHS), International Islamic University Malaysia (IIUM), Bandar Indera Mahkota, 25200 Kuantan, Pahang, MalaysiaDepartment of Optometry and Visual Science, Kulliyyah of Allied Health Sciences (KAHS), International Islamic University Malaysia (IIUM), Bandar Indera Mahkota, 25200 Kuantan, Pahang, MalaysiaDepartment of Optometry and Visual Science, Kulliyyah of Allied Health Sciences (KAHS), International Islamic University Malaysia (IIUM), Bandar Indera Mahkota, 25200 Kuantan, Pahang, MalaysiaDepartment of Optometry and Visual Science, Kulliyyah of Allied Health Sciences (KAHS), International Islamic University Malaysia (IIUM), Bandar Indera Mahkota, 25200 Kuantan, Pahang, MalaysiaDepartment of Diagnostic Imaging and Radiotherapy, Kulliyyah of Allied Health Sciences (KAHS), International Islamic University Malaysia (IIUM), Bandar Indera Mahkota, 25200 Kuantan, Pahang, MalaysiaObjective. The aim of this study was to compare the retinal vasculature complexity between emmetropia, and myopia in younger subjects. Methods. A total of 82 patients (24.12±1. 25 years) with two types of refractive conditions, myopia and emmetropia were enrolled in this study. Refraction data were converted to spherical equivalent refraction. These retinal images (right eyes) were obtained from NAVIS Lite Image Filing System and the vasculature complexity was measured by fractal dimension (Df), quantified using a computer software following a standardized protocol. Results. There was a significant difference (P < 0.05) in the value of Df between emmetropic (1.5666 ± 0.0160) and myopic (1.5588 ± 0.0142) groups. A positive correlation (rho = 0.260, P < 0.05) between the Df and the spherical equivalent refraction was detected in this study. Using a linear model, it was estimated that 6.7% of the variation in Df could be explained by spherical equivalent refraction. Conclusions. This study provides valuable findings about the effect of moderate to high myopia on the fractal dimension of the retinal vasculature network. These results show that myopic refraction in younger subjects was associated with a decrease in Df, suggesting a loss of retinal vessel density with moderate to high myopia.http://dx.doi.org/10.1155/2014/783525 |
| spellingShingle | Mohd Zulfaezal Che Azemin Norsyazwani Mohamad Daud Fadilah Ab Hamid Ilyanoon Zahari Abdul Halim Sapuan Influence of Refractive Condition on Retinal Vasculature Complexity in Younger Subjects The Scientific World Journal |
| title | Influence of Refractive Condition on Retinal Vasculature Complexity in Younger Subjects |
| title_full | Influence of Refractive Condition on Retinal Vasculature Complexity in Younger Subjects |
| title_fullStr | Influence of Refractive Condition on Retinal Vasculature Complexity in Younger Subjects |
| title_full_unstemmed | Influence of Refractive Condition on Retinal Vasculature Complexity in Younger Subjects |
| title_short | Influence of Refractive Condition on Retinal Vasculature Complexity in Younger Subjects |
| title_sort | influence of refractive condition on retinal vasculature complexity in younger subjects |
| url | http://dx.doi.org/10.1155/2014/783525 |
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