CIRRUS HD-OCT User Manual
2660021169012 Rev. A 2017-12
Posterior Segment
8-33
These plots are generated using linear regression in order to calculate the rate of loss.
Confidence bands for the regression line are also shown. They are determined based on
comparing the variability in the data to the rate of change. The slope (rate of change) is
displayed in micrometers/year with 95% confidence interval values. For example, with a
slope of –3.9 ±1.1, there is 95% confidence based on statistical analysis that the slope is
between –2.8 and –5.0
μ
m/year. This is shown graphically in the shaded gray area.
The graphical plots will show a rate of change and 95% confidence limits around that rate
of change whenever at least 4 exams that span at least 2 years are loaded. If there are
fewer than 4 scans loaded, or if there is less than two years between the first baseline and
the current scan, no rate of change analysis will be provided.
NOTE: Linear regression fits the data to a linear model, assuming that the measurements
are independent and normally distributed, and that variability does not depend on the size
of the measurement. If the observed measurements do not change linearly, the rate of
change may still provide information about how the patient has changed during the period
of examination, but it should not be used to predict future change. Linear regression is a
statistical analysis, and should not replace clinical evaluation of the patient’s status and
progress.
Summary Charts
Summary charts ("
RNFL & ONH Summary Chart" on page 8-36
for RNFL,
GCL+IPL Summary Chart" on page 8-39
for Ganglion Cell) display color-coded
summary boxes that provide alert if significant change has been detected.
Summary of Contents for CIRRUS HD-OCT 500
Page 1: ...2660021156446 B2660021156446 B CIRRUS HD OCT User Manual Models 500 5000 ...
Page 32: ...User Documentation 2660021169012 Rev A 2017 12 CIRRUS HD OCT User Manual 2 6 ...
Page 44: ...Software 2660021169012 Rev A 2017 12 CIRRUS HD OCT User Manual 3 12 ...
Page 58: ...User Login Logout 2660021169012 Rev A 2017 12 CIRRUS HD OCT User Manual 4 14 ...
Page 72: ...Patient Preparation 2660021169012 Rev A 2017 12 CIRRUS HD OCT User Manual 5 14 ...
Page 110: ...Tracking and Repeat Scans 2660021169012 Rev A 2017 12 CIRRUS HD OCT User Manual 6 38 ...
Page 122: ...Criteria for Image Acceptance 2660021169012 Rev A 2017 12 CIRRUS HD OCT User Manual 7 12 ...
Page 222: ...Overview 2660021169012 Rev A 2017 12 CIRRUS HD OCT User Manual 9 28 ...
Page 256: ...Log Files 2660021169012 Rev A 2017 12 CIRRUS HD OCT User Manual 11 18 ...
Page 308: ...Appendix 2660021169012 Rev A 2017 12 CIRRUS HD OCT User Manual A 34 ...
Page 350: ...CIRRUS HD OCT User Manual 2660021169012 Rev A 2017 12 I 8 ...
Page 351: ...CIRRUS HD OCT User Manual 2660021169012 Rev A 2017 12 ...