An assessment of regional differences in corneal thickness in normal human eyes, using the Orbscan II or ultrasound pachymetry

2007 ◽  
Vol 78 (4) ◽  
pp. 181-190 ◽  
Author(s):  
Michael J. Doughty ◽  
Sven Jonuscheit
Keyword(s):  
Regional Differences ◽  
Corneal Thickness ◽  
Ultrasound Pachymetry ◽  
Normal Human ◽  
Orbscan Ii ◽  
Human Eyes

scholarly journals Measurement of central corneal thickness using ultrasound pachymetry and Orbscan II in normal eyes

2015 ◽  
Vol 10 (1) ◽  
pp. 4 ◽  
Author(s):  
MohammadMehdi Sadoughi ◽  
Bahram Einollahi ◽  
Neda Einollahi ◽  
Javad Rezaei ◽  
Danial Roshandel ◽  
...  
Keyword(s):  
Central Corneal Thickness ◽  
Corneal Thickness ◽  
Ultrasound Pachymetry ◽  
Orbscan Ii

Agreement among 3 Methods to Measure Corneal Thickness: Ultrasound Pachymetry, Orbscan II, and Visante Anterior Segment Optical Coherence Tomography

Ophthalmology ◽  
2007 ◽  
Vol 114 (10) ◽  
pp. 1842-1847.e2 ◽  
Author(s):  
Emmy Y.M. Li ◽  
Shaheeda Mohamed ◽  
Christopher K.S. Leung ◽  
Srinivas K. Rao ◽  
Arthur C.K. Cheng ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Corneal Thickness ◽  
Anterior Segment ◽  
Optical Coherence ◽  
Ultrasound Pachymetry ◽  
Orbscan Ii

scholarly journals Central corneal thickness measured by the Orbscan II system, contact ultrasound pachymetry, and the Artemis 2 system

2008 ◽  
Vol 34 (11) ◽  
pp. 1906-1912 ◽  
Author(s):  
Tania Paul ◽  
Mira Lim ◽  
Christopher E. Starr ◽  
Harriet O. Lloyd ◽  
Jackson D. Coleman ◽  
...  
Keyword(s):  
Central Corneal Thickness ◽  
Corneal Thickness ◽  
Ultrasound Pachymetry ◽  
Orbscan Ii

scholarly journals Central and peripheral corneal thickness measurement with Orbscan II and topographical ultrasound pachymetry

2003 ◽  
Vol 29 (1) ◽  
pp. 125-132 ◽  
Author(s):  
Jose Manuel González-Méijome ◽  
Alejandro Cerviño ◽  
Eva Yebra-Pimentel ◽  
Manuel A. Parafita
Keyword(s):  
Corneal Thickness ◽  
Thickness Measurement ◽  
Ultrasound Pachymetry ◽  
Orbscan Ii

scholarly journals Comparison of corneal irregular astigmatism by the type of corneal regular astigmatism

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yuta Ueno ◽  
Risa Nomura ◽  
Takahiro Hiraoka ◽  
Katsuhito Kinoshita ◽  
Mutsuko Ohara ◽  
...  
Keyword(s):  
Higher Order ◽  
Stepwise Multiple Regression ◽  
Group Differences ◽  
Corneal Surface ◽  
Fourier Harmonic ◽  
Normal Human ◽  
The Mean ◽  
Human Eyes ◽  
Topography Data ◽  
Irregular Astigmatism

AbstractWe investigated the relation between corneal regular and irregular astigmatism in normal human eyes. In 951 eyes of 951 patients, corneal irregular astigmatism, such as asymmetry and higher-order irregularity components, was calculated using the Fourier harmonic analysis of corneal topography data within the central 3-mm zone of the anterior corneal surface. The eyes were classified by the type of corneal regular astigmatism into four groups; minimum (< 0.75 diopters), with-the-rule (WTR), against-the-rule (ATR), and oblique astigmatism. The mean age was significantly different among the four groups (P < 0.001); patients with WTR astigmatism were the youngest, followed by those with minimum, oblique, and ATR astigmatism. Significant inter-group differences were found among the four groups in asymmetry (P = 0.005) and higher-order irregularity components (P < 0.001); the largest was in eyes with oblique astigmatism, followed by ATR, WTR, and minimum astigmatism. The stepwise multiple regression analysis revealed that corneal regular astigmatism pattern significantly influenced the amount of corneal irregular astigmatism after controlling for confounding factors (P < 0.001). Corneal irregular astigmatism, such as asymmetry and higher order irregularity components, was the largest in eyes with oblique astigmatism, followed by those with ATR, WTR, and minimum astigmatism, even after adjustment for age of subjects.

Regional differences in capillary density and myocyte size in the normal human heart

1982 ◽  
Vol 202 (2) ◽  
pp. 187-191 ◽  
Author(s):  
Mark E. Stoker ◽  
A. Martin Gerdes ◽  
James F. May
Keyword(s):  
Regional Differences ◽  
Human Heart ◽  
Capillary Density ◽  
Normal Human
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