Effect of intraocular pressure on the hemodynamics of the central retinal artery: A mathematical model
Retinal hemodynamics plays a crucial role in the pathophysiology of several ocular diseases.There are clear evidences that the hemodynamics of the central retinal artery (CRA) is strongly affected by the level of intraocular pressure (IOP), which is the pressure inside the eye globe. However, the me...
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| Format: | Article |
| Language: | English |
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AIMS Press
2013-12-01
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| Series: | Mathematical Biosciences and Engineering |
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| Online Access: | https://www.aimspress.com/article/doi/10.3934/mbe.2014.11.523 |
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| author | Giovanna Guidoboni Alon Harris Lucia Carichino Yoel Arieli Brent A. Siesky |
| author_facet | Giovanna Guidoboni Alon Harris Lucia Carichino Yoel Arieli Brent A. Siesky |
| author_sort | Giovanna Guidoboni |
| collection | DOAJ |
| description | Retinal hemodynamics plays a crucial role in the pathophysiology of several ocular diseases.There are clear evidences that the hemodynamics of the central retinal artery (CRA) is strongly affected by the level of intraocular pressure (IOP), which is the pressure inside the eye globe. However, the mechanisms through which this occurs are still elusive. The main goal of this paper is to develop a mathematical model that combines the mechanical action of IOP and the blood flow in the CRA to elucidate the mechanisms through which IOP elevation affects the CRA hemodynamics. Our model suggests that the development of radial compressive regions in the lamina cribrosa (a collagen structure in the optic nerve pierced by the CRA approximately in its center) might be responsible for the clinically-observed blood velocity reduction in the CRA following IOP elevation. The predictions of the mathematical model are in very good agreement with experimental and clinical data. Our model also identifies radius and thickness of the lamina cribrosa as major factors affecting the IOP-CRA relationship, suggesting that anatomical differences among individuals might lead to different hemodynamic responses to IOP elevation. |
| format | Article |
| id | doaj-art-a39768300f314d7ea679980d989489b8 |
| institution | Kabale University |
| issn | 1551-0018 |
| language | English |
| publishDate | 2013-12-01 |
| publisher | AIMS Press |
| record_format | Article |
| series | Mathematical Biosciences and Engineering |
| spelling | doaj-art-a39768300f314d7ea679980d989489b82025-01-24T02:28:12ZengAIMS PressMathematical Biosciences and Engineering1551-00182013-12-0111352354610.3934/mbe.2014.11.523Effect of intraocular pressure on the hemodynamics of the central retinal artery: A mathematical modelGiovanna Guidoboni0Alon Harris1Lucia Carichino2Yoel Arieli3Brent A. Siesky4Department of Mathematical Sciences, Indiana University - Purdue University at Indianapolis, Indianapolis, INDepartment of Ophthalmology, Department of Cellular & Integrative Physiology, Eugene and Marilyn Glick Eye Institute, Indiana University School of Medicine, Indianapolis, INDepartment of Mathematical Sciences, Indiana University - Purdue University at Indianapolis, Indianapolis, INDepartment of Electro Optics, Jerusalem College of Technology, JerusalemDepartment of Ophthalmology, Eugene and Marilyn Glick Eye Institute, Indiana University School of Medicine, Indianapolis, INRetinal hemodynamics plays a crucial role in the pathophysiology of several ocular diseases.There are clear evidences that the hemodynamics of the central retinal artery (CRA) is strongly affected by the level of intraocular pressure (IOP), which is the pressure inside the eye globe. However, the mechanisms through which this occurs are still elusive. The main goal of this paper is to develop a mathematical model that combines the mechanical action of IOP and the blood flow in the CRA to elucidate the mechanisms through which IOP elevation affects the CRA hemodynamics. Our model suggests that the development of radial compressive regions in the lamina cribrosa (a collagen structure in the optic nerve pierced by the CRA approximately in its center) might be responsible for the clinically-observed blood velocity reduction in the CRA following IOP elevation. The predictions of the mathematical model are in very good agreement with experimental and clinical data. Our model also identifies radius and thickness of the lamina cribrosa as major factors affecting the IOP-CRA relationship, suggesting that anatomical differences among individuals might lead to different hemodynamic responses to IOP elevation.https://www.aimspress.com/article/doi/10.3934/mbe.2014.11.523lamina cribrosa.fluid-structure interactioncentral retinal arteryintraocular pressureocular blood flow |
| spellingShingle | Giovanna Guidoboni Alon Harris Lucia Carichino Yoel Arieli Brent A. Siesky Effect of intraocular pressure on the hemodynamics of the central retinal artery: A mathematical model Mathematical Biosciences and Engineering lamina cribrosa. fluid-structure interaction central retinal artery intraocular pressure ocular blood flow |
| title | Effect of intraocular pressure on the hemodynamics of the central retinal artery: A mathematical model |
| title_full | Effect of intraocular pressure on the hemodynamics of the central retinal artery: A mathematical model |
| title_fullStr | Effect of intraocular pressure on the hemodynamics of the central retinal artery: A mathematical model |
| title_full_unstemmed | Effect of intraocular pressure on the hemodynamics of the central retinal artery: A mathematical model |
| title_short | Effect of intraocular pressure on the hemodynamics of the central retinal artery: A mathematical model |
| title_sort | effect of intraocular pressure on the hemodynamics of the central retinal artery a mathematical model |
| topic | lamina cribrosa. fluid-structure interaction central retinal artery intraocular pressure ocular blood flow |
| url | https://www.aimspress.com/article/doi/10.3934/mbe.2014.11.523 |
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