Zeiss CIRRUS HD-OCT 500, User Manual

Page: 140 / 352

Posterior Segment
2660021169012 Rev. A 2017-12 CIRRUS HD-OCT User Manual
8-18
RPE Elevation Considerations
The RPE Analysis view displays an RPE Elevation Map as an overlay on the Fundus image.
The transparency can be adjusted using the transparency slider.
The color coding aids in identifying bumps and discontinuities in the RPE. The map shows
circles corresponding to 3 mm and 5 mm in diameter centered on the fovea. On the side of
the map the legend shows how the colors correspond to the height of the elevations.
The RPE elevation measurements can be affected by the presence, size, or extent of
• geographic atrophy
• choroidal neovascularization
• extensive epiretinal membrane
• vitreomacular traction
cáÖìêÉ=UJNO=^Çî~åÅÉÇ=omb=^å~äóëáë=Ó=pÅêÉÉå=N=
1
2
3
4
5
6
7
8
1 RPE Elevation Map overlaid
on Fundus image
2 Circles on the RPE Elevation
Map centered on the fovea
location
3 Transparency adjustment for
RPE Elevation Map
4 Line from fovea connecting
closest sub–RPE illumination
area
5 Transparency control for Sub–
RPE Slab overlaid on OCT
Fundus image
6 Sub–RPE Slab with overlaid
segmentation of Sub–RPE
Illumination
7 Horizontal tomogram
showing RPE Elevation
segmentation line
8 Fovea location for exam
shown above