Presentation is loading. Please wait.

Presentation is loading. Please wait.

Date of download: 12/25/2017 Copyright © ASME. All rights reserved.

Similar presentations


Presentation on theme: "Date of download: 12/25/2017 Copyright © ASME. All rights reserved."— Presentation transcript:

1 Date of download: 12/25/2017 Copyright © ASME. All rights reserved. From: Goldmann Tonometry Correction Factors Based on Numerical Analysis J Biomech Eng. 2009;131(11): doi: / Figure Legend: Discretization method of numerical model. The model shown has 2 layers of solid elements arranged in 6 segments and 12 rings. The total number of elements is 144 elements per segment per layer×6 segments×2 layers=1728.

2 Date of download: 12/25/2017 Copyright © ASME. All rights reserved. From: Goldmann Tonometry Correction Factors Based on Numerical Analysis J Biomech Eng. 2009;131(11): doi: / Figure Legend: Numerical estimation of the influence of CCT on IOP measurement using GAT: (a) IOP=15 mm Hg, (b) IOP=20 mm Hg, and (c) IOP=25 mm Hg

3 Date of download: 12/25/2017 Copyright © ASME. All rights reserved. From: Goldmann Tonometry Correction Factors Based on Numerical Analysis J Biomech Eng. 2009;131(11): doi: / Figure Legend: Numerical estimation of the influence of R on IOP measurement using GAT: (a) IOP=15 mm Hg, (b) IOP=20 mm Hg, and (c) IOP=25 mm Hg

4 Date of download: 12/25/2017 Copyright © ASME. All rights reserved. From: Goldmann Tonometry Correction Factors Based on Numerical Analysis J Biomech Eng. 2009;131(11): doi: / Figure Legend: Numerical estimation of the influence of age on IOP measurement using GAT: (a) IOP=15 mm Hg, (b) IOP=20 mm Hg, and (c) IOP=25 mm Hg

5 Date of download: 12/25/2017 Copyright © ASME. All rights reserved. From: Goldmann Tonometry Correction Factors Based on Numerical Analysis J Biomech Eng. 2009;131(11): doi: / Figure Legend: Effect of CCT variation on IOP measurement as predicted by the present numerical study, the mathematical modeling carried out by Liu and Roberts and by Orssengo and Pye , and the clinical data for eyes with R between 7.6 mm and 8.0 mm. In their analysis, Liu and Roberts used R=7.8 mm and E=0.19 MPa. Orssengo and Pye used R=7.8 mm and E=0.0229 IOP. All analyses considered IOPT=15 mm Hg. (a) Comparison against earlier mathematical results and (b) comparison against trend lines in clinical data.

6 Date of download: 12/25/2017 Copyright © ASME. All rights reserved. From: Goldmann Tonometry Correction Factors Based on Numerical Analysis J Biomech Eng. 2009;131(11): doi: / Figure Legend: Effect of R variation on IOP measurement as predicted by the present numerical study, the mathematical modeling carried out by Liu and Roberts and Orssengo and Pye , and the clinical data for eyes with CCT between 480 μm and 560 μm. In their analysis, Liu and Roberts used CCT=526 μm and E=0.19 MPa. Orssengo and Pye used CCT=520 μm and E=0.0229 IOP. All analyses considered IOPT=15 mm Hg. (a) Comparison against earlier mathematical results and (b) comparison against trend lines in clinical data.

7 Date of download: 12/25/2017 Copyright © ASME. All rights reserved. From: Goldmann Tonometry Correction Factors Based on Numerical Analysis J Biomech Eng. 2009;131(11): doi: / Figure Legend: Variation of the correction factor over a range of CCT, R, and age values. The correction factors presented have the average values obtained within the range of IOPG considered (10–30 mm Hg).


Download ppt "Date of download: 12/25/2017 Copyright © ASME. All rights reserved."

Similar presentations


Ads by Google