Zeiss CIRRUS HD-OCT 500, User Manual

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Posterior Segment
2660021169012 Rev. A 2017-12 CIRRUS HD-OCT User Manual
8-8
The thickness grid also moves in conjunction with the repositioning of the ETDRS Grid
position on the overlay, as shown in
Figure 8-4 .
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This interactive analysis screen gives you several options to view patient data. Use the
button tools to line up the slice navigators with ETDRS Grid position and vice versa. For
example, manually drag the ETDRS Grid to a new position on the overlay, then:
• Select to center the slice navigators over the new ETDRS Grid position, as shown
on the left. Note that the thickness grid does not change location.
• Select to reset the ETDRS Grid position to the original CIRRUS–calculated
position. The slice navigators also move back to their original positions over the ETDRS
Grid position.
Now move the slice navigators to a new position, as shown in Figure 8-4 . The ETDRS
Grid position does not change, nor does the thickness grid position.
• Select to align the ETDRS Grid position with the slice navigators.
• Select to move the ETDRS Grid and the slice navigators back to their original
location.
To save the new fovea position for future analysis, click the Save button in the upper
right–hand corner of the screen.
ILM–RPE Layers
The Inner Limiting Membrane (ILM) and posterior portion of the Retinal Pigment
Epithelium (RPE) may be viewed and measured quickly through the CIRRUS Macular
Thickness Analysis (
Figure 8-3 ).
Slab Overlay ILM–RPE Thickness Map
The ETDRS grid in Figure 8-5 shows the values, in micrometers, of the ILM–RPE
thickness. You can change the position of the ETDRS grid. If you change it, the reported
ETDRS Grid
position
moved
Thickness
grid moves
in conjunction
with ETDRS
Grid