A speckle interferometric technique for the evaluation of corneal biomechanics under physiological pressure variations (Conference Presentation)

2019 ◽  
Author(s):  
Abby Wilson ◽  
John Marshall
Keyword(s):  
Corneal Biomechanics ◽  
Interferometric Technique ◽  
Physiological Pressure

Corneal biomechanics: Measurement and structural correlations

2021 ◽  
Vol 205 ◽  
pp. 108508
Author(s):  
Jillian Chong ◽  
William J. Dupps
Keyword(s):  
Corneal Biomechanics

Novel Parameter of Corneal Biomechanics That Differentiate Normals From Glaucoma

2016 ◽  
Vol 25 (6) ◽  
pp. e603-e609 ◽  
Author(s):  
Rachel Lee ◽  
Robert T. Chang ◽  
Ian Y.H. Wong ◽  
Jimmy S.M. Lai ◽  
Jacky W.Y. Lee ◽  
...  
Keyword(s):  
Corneal Biomechanics

The vibration of electrified water drops

1971 ◽  
Vol 322 (1551) ◽  
pp. 523-534 ◽  
Keyword(s):  
Electric Field ◽  
Electric Fields ◽  
Axial Ratio ◽  
Uniform Electric Field ◽  
Interferometric Technique ◽  
Photographic Analysis ◽  
Wide Range ◽  
Water Drops ◽  
Strength And Deformation ◽  
A Charge

Pressure has been used as the principal parameter in calculations of the fundamental vibrational frequencies of spherical drops of radius R , density ρ, and surface tension T carrying a charge Q or uncharged spheroidal drops of axial ratio a / b situated in a uniform electric field of strength E . Freely vibrating charged drops have a frequency f = f 0 ( 1 - Q 2 /16π R 3 T ) ½ , as shown previously by Rayleigh (1882) using energy considerations; f 0 is the vibrational frequency of non-electrified drops (Rayleigh 1879). The fundamental frequency of an uncharged drop in an electric field will decrease with increasing field strength and deformation a / b and will equal zero when E ( R )/ T ) ½ = 1.625 and a / b = 1.86; these critical values correspond to the disintegration conditions derived by Taylor (1964). An interferometric technique involving a laser confirmed the accuracy of the calculations concerned with charged drops. The vibration of water drops of radius around 2 mm was studied over a wide range of temperatures as they fell through electric fields either by suspending them in a vertical wind tunnel or allowing them to fall between a pair of vertical electrodes. Photographic analysis of the vibrations revealed good agreement between theory and experiment over the entire range of conditions studied even though the larger drops were not accurately spheroidal and the amplitude of the vibrations was large.

Pregnancy-induced Changes in Corneal Biomechanics and Topography Are Thyroid Hormone Related

2017 ◽  
Vol 184 ◽  
pp. 129-136 ◽  
Author(s):  
David Tabibian ◽  
Begoña M. de Tejada ◽  
Zisis Gatzioufas ◽  
Sabine Kling ◽  
Vanessa S. Meiss ◽  
...  
Keyword(s):  
Thyroid Hormone ◽  
Corneal Biomechanics ◽  
Induced Changes

Corneal biomechanics measured with the ocular response analyser in patients with unilateral open-angle glaucoma

2011 ◽  
Vol 89 (2) ◽  
pp. e189-e192 ◽  
Author(s):  
Christoph Hirneiß ◽  
Aljoscha S. Neubauer ◽  
Alice Yu ◽  
Anselm Kampik ◽  
Marcus Kernt
Keyword(s):  
Open Angle Glaucoma ◽  
Corneal Biomechanics ◽  
Open Angle ◽  
Ocular Response Analyser
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