Study on the deformations of the lamina cribrosa during glaucoma

doi:10.1016/j.actbio.2017.03.028

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	Study on the deformations of the lamina cribrosa during glaucoma
	Tian HJ(田晗菁); Li L(李龙); Song F(宋凡); Song, F (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China.
发表期刊	ACTA BIOMATERIALIA
	2017-06-01
卷号	55 页码:340-348
ISSN	1742-7061
摘要	The lamina cribrosa is the primary site of optic nerve injury during glaucoma and its deformations induced by elevated intraocular pressure are associated directly with the optic nerve injury and visual field defect. However the deformations in a living body have been poorly understood yet so far. It is because that integral observation and precise measurement of the deformations in vivo are now almost impossible in the clinical diagnosis and treatment of glaucoma. In the present study a new mechanical model of the lamina cribrosa is presented by using Reissner's thin plate theory. This model accurately displays the stress and deformation states in the lamina cribrosa under elevated intraocular pressure in which the shear deformation is not presented by the previous models however is demonstrated to play a key role in the optic nerve injury. Further the deformations of the structures involving the optic nerve channels and the laminar sheets in the lamina cribrosa are first investigated in detail. For example the dislocation of the laminar sheets reaches 18.6 mu m under the intraocular pressure of 40 mmHg which is large enough to damage the optic nerve axons. The results here confirm some previously proposed clinical speculations on the deformations of the pore shape in the lamina cribrosa under elevated intraocular pressure during glaucoma. Finally some essentially clinical questions existed during glaucoma such as the pathological mechanism of the open-angle glaucoma with normal intraocular pressure are discussed. The present study is beneficial to deeply understanding the optic nerve injury during glaucoma.
关键词	Lamina Cribrosa Glaucoma Deformation Optic Nerve Injury Reissner's Thin Plate Theory
DOI	10.1016/j.actbio.2017.03.028
收录类别	SCI
语种	英语
WOS记录号	WOS:000403414500026
关键词[WOS]	OPTIC-NERVE HEAD ; INTRAOCULAR-PRESSURE ELEVATION ; OPEN-ANGLE GLAUCOMA ; MATHEMATICAL-MODEL ; HUMAN EYES ; BIOMECHANICS ; DAMAGE ; DISEASE ; DISC
WOS研究方向	Engineering ; Materials Science
WOS类目	Engineering, Biomedical ; Materials Science, Biomaterials
项目资助者	National Natural Science Foundation of China(11232013 ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB22040102) ; National Key Research and Development Program of China - China(2016YFA0501601) ; 11472285)
课题组名称	LNM生物材料微结构和力学性能
论文分区	一类
力学所作者排名	1
引用统计	被引频次：10[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/60512
专题	非线性力学国家重点实验室
通讯作者	Song, F (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China.
推荐引用方式 GB/T 7714	Tian HJ,Li L,Song F,et al. Study on the deformations of the lamina cribrosa during glaucoma[J]. ACTA BIOMATERIALIA,2017,55:340-348.
APA	田晗菁,李龙,宋凡,&Song, F .(2017).Study on the deformations of the lamina cribrosa during glaucoma.ACTA BIOMATERIALIA,55,340-348.
MLA	田晗菁,et al."Study on the deformations of the lamina cribrosa during glaucoma".ACTA BIOMATERIALIA 55(2017):340-348.

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