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The biomechanical significance of pulley on binocular vision.
- Source :
-
BioMedical Engineering OnLine . 2016 Supplement, Vol. 15, p507-516. 10p. - Publication Year :
- 2016
-
Abstract
- <bold>Background: </bold>Pulleys have been reported as the functional origins of the rectus extraocular muscles (EOMs). However, biomechanical significance of pulleys on binocular vision has not been reported.<bold>Methods: </bold>Three eye movement models, i.e., non-pulley model, passive-pulley model, and active-pulley model, are used to simulate the horizontal movement of the eyes from the primary position to the left direction in the range of 1°-30°. The resultant forces of six EOMs along both orthogonal directions (i.e., the x-axis and y-axis defined in this paper) in the horizontal plane are calculated using the three models.<bold>Results: </bold>The resultant force along the y-axis of the left eye for non-pulley model are significantly larger than that of the other two pulley models. The difference of the force, between the left eye and the right eye in non-pulley model, is larger than those in the other two pulley models along x-axis and y-axis.<bold>Conclusion: </bold>The pulley models present more biomechanical advantage on the horizontally binocular vision than the non-pulley model. Combining with the previous imaging evidences of pulleys, the results show that pulley model coincides well with the real physiological conditions. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 1475925X
- Volume :
- 15
- Database :
- Academic Search Index
- Journal :
- BioMedical Engineering OnLine
- Publication Type :
- Academic Journal
- Accession number :
- 120465302
- Full Text :
- https://doi.org/10.1186/s12938-016-0280-0