Analysis of the Effects of Flicker on the Blood-Flow Variation in the Human Eye

2009 ◽  
Vol 58 (9) ◽  
pp. 2916-2922 ◽  
Author(s):  
L. Peretto ◽  
C.E. Riva ◽  
L. Rovati ◽  
G. Salvatori ◽  
R. Tinarelli
Keyword(s):  
Blood Flow ◽  
Flow Variation ◽  
Human Eye

Thermographic blood flow variation relative to lower limp position

2014 ◽  
Vol 30 ◽  
pp. e102-e103
Author(s):  
A. Skouroliakou ◽  
I. Seferis ◽  
C. Michail ◽  
I. Sianoudis ◽  
D. Mathes ◽  
...  
Keyword(s):  
Blood Flow ◽  
Flow Variation

Retinal Blood Flow in the Normal Human Eye Using the Canon Laser Blood Flowmeter

2002 ◽  
Vol 34 (5) ◽  
pp. 295-299 ◽  
Author(s):  
Julian P.S. Garcia Jr ◽  
Patricia T. Garcia ◽  
Richard B. Rosen
Keyword(s):  
Blood Flow ◽  
Retinal Blood Flow ◽  
Human Eye ◽  
Normal Human

scholarly journals Detection of Site-Specific Blood Flow Variation in Humans during Running by a Wearable Laser Doppler Flowmeter

Sensors ◽  
2015 ◽  
Vol 15 (10) ◽  
pp. 25507-25519 ◽  
Author(s):  
Wataru Iwasaki ◽  
Hirofumi Nogami ◽  
Satoshi Takeuchi ◽  
Masutaka Furue ◽  
Eiji Higurashi ◽  
...  
Keyword(s):  
Blood Flow ◽  
Laser Doppler ◽  
Laser Doppler Flowmeter ◽  
Site Specific ◽  
Flow Variation ◽  
Doppler Flowmeter

Thermal Modeling of the Human Eye as a Porous Structure

2009 ◽  
Author(s):  
Maryam Shafahi ◽  
Kambiz Vafai
Keyword(s):  
Blood Flow ◽  
Thermal Equilibrium ◽  
Radiation Effects ◽  
Energy Transport ◽  
Thermal Modeling ◽  
The Body ◽  
Local Thermal Equilibrium ◽  
Posterior Chamber ◽  
Convection Coefficient ◽  
Human Eye

Human eye is one of the most sensitive parts of the body when exposed to radiation effects. Since there is no barrier (such as skin) to protect the eye against the absorption of the external thermal waves, radiation can readily interact with cornea. On the other hand, lack of blood flow in the interior part of the eye makes it more vulnerable compared to other organs even in the case of weak heat interaction. Further, blood flow circulation alone cannot establish thermal equilibrium between the eye and body organs effectively. There are limitations in measuring human eye temperature profile experimentally due to the required invasive procedures in monitoring the inner layers. Therefore, there is a need to develop an accurate model to represent the eye structure and energy transport through it. Thermal modeling of the eye is important to investigate the effect of external heat sources as well as in predicting the abnormalities within the eye. Modeling of heat transport through the human eye has been the subject of interest for years, but the application of porous media models in this field is new and will be one of the themes of this study. In this work, iris/sclear is considered as a porous medium and energy transport is modeled using the tissue local thermal equilibrium equations. The eye is assumed to include six different parts: cornea, anterior chamber, posterior chamber, iris/sclera, lens and vitreous. A two-dimensional finite element simulation will be performed. Results are shown in terms of transient corneal surface temperature, isothermal lines in different regions and local temperature of pupillary axis. Effects of external radiation sources, convection coefficient of the surrounding air, blood temperature, blood convection coefficient and ambient temperature on different regions of the eye are also investigated.

Sign in / Sign up

Export Citation Format

Share Document