scholarly journals A Water Balloon Eye Model for Teaching about the Human Eye

2020 ◽  
Vol 82 (5) ◽  
pp. 341-343
Author(s):  
Kwok-chi Lau
Keyword(s):  
Intraocular Pressure ◽  
Eye Model ◽  
Human Eye ◽  
Convex Lens

A physical eye model made of a water balloon and a convex lens is described. It can be used to model how an image is formed in the eye as well as shortsightedness and farsightedness. The model is unique in featuring a fluid-filled “eyeball” with “intraocular pressure,” making it a useful tool for teaching about accommodation and glaucoma. Instructional ideas for the model are suggested.

SIMULATING THE EFFECTS OF ELEVATED INTRAOCULAR PRESSURE ON OCULAR STRUCTURES USING A GLOBAL FINITE ELEMENT MODEL OF THE HUMAN EYE

2017 ◽  
Vol 17 (02) ◽  
pp. 1750038 ◽  
Author(s):  
PEISHAN DAI ◽  
YALI ZHAO ◽  
HANWEI SHENG ◽  
LING LI ◽  
JING WU ◽  
...  
Keyword(s):  
Finite Element ◽  
Intraocular Pressure ◽  
Element Model ◽  
Global Model ◽  
Eye Model ◽  
Human Eye ◽  
Anterior Eye Segment ◽  
Elevated Intraocular Pressure ◽  
Biomechanical Responses ◽  
Iop Elevation

Elevated intraocular pressure (IOP) may be the primary risk factor to the development of glaucoma. Finite element (FE) modeling is commonly considered as an effective method to quantitatively analyze pathogenesis of glaucoma. Recent researches focus on establishing partial human eye models. A refined global human eye model was developed using ANSYS software to investigate the correlation between IOP elevation and biomechanical responses. First, the pressure transferring process according to IOP elevation in the whole eye was analyzed to simulate the effects of IOP elevation on glaucoma. Then, the biomechanical responses of the anterior eye segment under various pressure differences between the anterior and posterior chambers (AC and PC) were analyzed to simulate posterior nonadhesion of iris and posterior synechia. This global eye model not only simulated the responses of elevated IOP on ocular structures, but also revealed the process of pressure transferring among each tissue from the anterior eye segment to the optic nerve head (ONH) region. The local mechanical characteristics of the ocular structures obtained from the global model agreed with previous findings. This global model may shed light on the studies of multifactorial glaucoma.

scholarly journals Evaluation of a novel method to measure the intraocular pressure based on a mechanical eye model

2012 ◽  
Vol 57 (SI-1 Track-P) ◽  
Author(s):  
K. Saleh ◽  
V. Unger ◽  
A. Dietzel ◽  
D. Heydenreich ◽  
R. Großjohann ◽  
...  
Keyword(s):  
Intraocular Pressure ◽  
Eye Model ◽  
Novel Method

Research of bright pupil effect based on Chinese human eye model

2014 ◽  
Vol 12 (11) ◽  
pp. 113301-113303 ◽  
Author(s):  
Meimei Kong Meimei Kong ◽  
Zhen Li Zhen Li
Keyword(s):  
Eye Model ◽  
Human Eye

scholarly journals Development of a human eye model incorporated with intraocular scattering for visual performance assessment

2012 ◽  
Vol 17 (7) ◽  
pp. 0750091 ◽  
Author(s):  
Yi-Chun Chen ◽  
Chong-Jhih Jiang ◽  
Tsung-Hsun Yang ◽  
Ching-Cherng Sun
Keyword(s):  
Performance Assessment ◽  
Visual Performance ◽  
Eye Model ◽  
Human Eye
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