Skip to main content

Table 3 Sample numerical results obtained from the presented software (in brackets they are given after unit conversion for the size 0.15 mm/pixel and time 231 μm/pixel)

From: Open source software for the analysis of corneal deformation parameters on the images from the Corvis tonometer

Measured parameter Value
Data source origin Hard drive
Source File Test082.jpg
Image number 82
Frequency of the first harmonic 309 ± 160 Hz
Applanation time 29 and 96 pixels (6.7 ms, 22.2 ms)
Difference in corneal deformation Minimum −12.1 pixels (1.8 mm) and maximum 20.7 pixels (3.1 mm)
Amplitude of the eyeball response 29 and 19 pixels (4.3 mm, 2.9 mm)
Maximum corneal deformation 66.6 pixels (10 mm)
Maximum corneal deformation for the frequency > 100 Hz −1.1 2 pixels (−1.7 mm, 0.3 mm)
Amplitude of the first harmonic 0.2 pixel (0.03 mm)
Amplitude of the first harmonic measured at the highest points of curvature 0.16 and 0.15 pixel (24 μm, 22 μm)
Location of points with the greatest curvature during deflection over time 272 and 323 pixels (63.1 ms, 74.6 ms)