A Novel Three-Dimensional Vector Analysis of Axial Globe Position in Thyroid Eye Disease
Purpose. To define a three-dimensional (3D) vector method to describe the axial globe position in thyroid eye disease (TED). Methods. CT data from 59 patients with TED were collected and 3D images were reconstructed. A reference coordinate system was established, and the coordinates of the corneal a...
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | Journal of Ophthalmology |
| Online Access: | http://dx.doi.org/10.1155/2017/7253898 |
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| author | Jie Guo Jiang Qian Yifei Yuan Rui Zhang Wenhu Huang |
| author_facet | Jie Guo Jiang Qian Yifei Yuan Rui Zhang Wenhu Huang |
| author_sort | Jie Guo |
| collection | DOAJ |
| description | Purpose. To define a three-dimensional (3D) vector method to describe the axial globe position in thyroid eye disease (TED). Methods. CT data from 59 patients with TED were collected and 3D images were reconstructed. A reference coordinate system was established, and the coordinates of the corneal apex and the eyeball center were calculated to obtain the globe vector EC→. The measurement reliability was evaluated. The parameters of EC→ were analyzed and compared with the results of two-dimensional (2D) CT measurement, Hertel exophthalmometry, and strabismus tests. Results. The reliability of EC→ measurement was excellent. The difference between EC→ and 2D CT measurement was significant (p=0.003), and EC→ was more consistent with Hertel exophthalmometry than with 2D CT measurement (p<0.001). There was no significant difference between EC→ and Hirschberg test, and a strong correlation was found between EC→ and synoptophore test. When one eye had a larger deviation angle than its fellow, its corneal apex shifted in the corresponding direction, but the shift of the eyeball center was not significant. The parameters of EC→ were almost perfectly consistent with the geometrical equation. Conclusions. The establishment of a 3D globe vector is feasible and reliable, and it could provide more information in the axial globe position. |
| format | Article |
| id | doaj-art-735184a334f74c3a9fb71c841b198741 |
| institution | Kabale University |
| issn | 2090-004X 2090-0058 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Ophthalmology |
| spelling | doaj-art-735184a334f74c3a9fb71c841b1987412025-02-03T06:44:39ZengWileyJournal of Ophthalmology2090-004X2090-00582017-01-01201710.1155/2017/72538987253898A Novel Three-Dimensional Vector Analysis of Axial Globe Position in Thyroid Eye DiseaseJie Guo0Jiang Qian1Yifei Yuan2Rui Zhang3Wenhu Huang4Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, ChinaDepartment of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, ChinaDepartment of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, ChinaDepartment of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, ChinaDepartment of Radiology, Eye & ENT Hospital, Fudan University, Shanghai, ChinaPurpose. To define a three-dimensional (3D) vector method to describe the axial globe position in thyroid eye disease (TED). Methods. CT data from 59 patients with TED were collected and 3D images were reconstructed. A reference coordinate system was established, and the coordinates of the corneal apex and the eyeball center were calculated to obtain the globe vector EC→. The measurement reliability was evaluated. The parameters of EC→ were analyzed and compared with the results of two-dimensional (2D) CT measurement, Hertel exophthalmometry, and strabismus tests. Results. The reliability of EC→ measurement was excellent. The difference between EC→ and 2D CT measurement was significant (p=0.003), and EC→ was more consistent with Hertel exophthalmometry than with 2D CT measurement (p<0.001). There was no significant difference between EC→ and Hirschberg test, and a strong correlation was found between EC→ and synoptophore test. When one eye had a larger deviation angle than its fellow, its corneal apex shifted in the corresponding direction, but the shift of the eyeball center was not significant. The parameters of EC→ were almost perfectly consistent with the geometrical equation. Conclusions. The establishment of a 3D globe vector is feasible and reliable, and it could provide more information in the axial globe position.http://dx.doi.org/10.1155/2017/7253898 |
| spellingShingle | Jie Guo Jiang Qian Yifei Yuan Rui Zhang Wenhu Huang A Novel Three-Dimensional Vector Analysis of Axial Globe Position in Thyroid Eye Disease Journal of Ophthalmology |
| title | A Novel Three-Dimensional Vector Analysis of Axial Globe Position in Thyroid Eye Disease |
| title_full | A Novel Three-Dimensional Vector Analysis of Axial Globe Position in Thyroid Eye Disease |
| title_fullStr | A Novel Three-Dimensional Vector Analysis of Axial Globe Position in Thyroid Eye Disease |
| title_full_unstemmed | A Novel Three-Dimensional Vector Analysis of Axial Globe Position in Thyroid Eye Disease |
| title_short | A Novel Three-Dimensional Vector Analysis of Axial Globe Position in Thyroid Eye Disease |
| title_sort | novel three dimensional vector analysis of axial globe position in thyroid eye disease |
| url | http://dx.doi.org/10.1155/2017/7253898 |
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