scholarly journals Finite Element Analysis Predicts Large Optic Nerve Head Strains During Horizontal Eye Movements

2016 ◽  
Vol 57 (6) ◽  
pp. 2452 ◽  
Author(s):  
Xiaofei Wang ◽  
Helmut Rumpel ◽  
Winston Eng Hoe Lim ◽  
Mani Baskaran ◽  
Shamira A. Perera ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Eye Movements ◽  
Optic Nerve ◽  
Optic Nerve Head ◽  
Element Analysis

FINITE ELEMENT ANALYSIS OF THE MECHANICAL CHARACTERISTICS OF GLAUCOMA

2016 ◽  
Vol 16 (04) ◽  
pp. 1650060 ◽  
Author(s):  
PEISHAN DAI ◽  
HAN HAN ◽  
YALI ZHAO ◽  
MIN FAN
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Optic Nerve ◽  
Finite Element Model ◽  
Mechanical Characteristics ◽  
Element Model ◽  
Finite Element Method Result ◽  
Element Analysis ◽  
Human Eye ◽  
Geometry Model

Purpose: Construct a finite element model of the human eye to quantitatively analyze the mechanical characteristics of the human eye, especially the glaucoma damage process of the optic nerve head (ONH). Method: First, the geometry model of the human eye with nonuniform thickness was established based on a reasonable hypothesis and assumptions. Because the ONH is an important factor for glaucoma, we refine the structure of the ONH with lamina cribrosa. Then, mesh division was applied for finite element analysis. To simplify the complexity of the analysis, the materials of the model were assumed to be isotropic linear elastic materials, and physical properties such as Young’s modulus and Poisson’s ratio were set according to published literature. Next, proper constraints and loads were applied to the model and solved with a finite element method. Result: A finite element model of the human eye was created to simulate the mechanical characteristics of the eye structures under high intraocular pressure (IOP). The ONH depressed 1.057[Formula: see text]mm under 0.009[Formula: see text]MPa pressure to simulate high IOP. Conclusion: The constructed model is able to quantitatively simulate excavation of the optic disc and damage of the optic nerve. The result proved Houcheng Liang’s hypothesis about the ONH damage mechanism in glaucoma.

Design of Retinal Stent Using Finite Element Analysis

2013 ◽  
Author(s):  
R. Rusovici ◽  
D. Dalli ◽  
K. Mitra ◽  
M. Calhoun ◽  
R. Mazzocchi ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Optic Nerve ◽  
Retinal Detachment ◽  
Visual Information ◽  
Vision Loss ◽  
Tissue Layer ◽  
Element Analysis ◽  
The Brain

The retina is a light-sensitive tissue layer that lines the inside of the eye and relays visual information directly to the brain via the optic nerve. Retinal detachment occurs when the retina is lifted or pulled from its physiological location. This condition can result in partial or total vision loss. Retinal detachmentis a leading cause of permanent vision loss.

Finite element analysis on dental implant[ndash ]supported prostheses without passive fit

2002 ◽  
Vol 11 (1) ◽  
pp. 30-40 ◽  
Author(s):  
Chatchai Kunavisarut ◽  
Lisa A. Lang ◽  
Brian R. Stoner ◽  
David A. Felton
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Dental Implant ◽  
Element Analysis ◽  
Passive Fit
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