Chapter 2 - Introduction
FIGURE 3: Optos OCT
line
scan example position and scan pattern
Optos OCT
raster
scan
Captures a raster scan of OCT images covering a 48 x 30 degrees (14 mm x 9 mm) central field of view.
The Optos OCT
raster
scan comprises 121 horizontal line scans.
The Optos OCT
raster
scan moves automatically through the scan volume and lets you capture the macula
and optic nerve head within a single OCT volume scan.
FIGURE 4: Optos OCT
raster
scan example area, scan pattern and fixed center
Optos OCT
retina
scan
Captures a high density raster scan of OCT images covering a 30 x 30 degrees (9 mm x 9 mm) field of view
and centered around the macula. The Optos OCT
retina
scan comprises 111 horizontal line scans.
The fovea should be in the center for all macula scans. Ensure the cross-hairs are centered on the macula.
FIGURE 5: Optos OCT
retina
scan example scan area and cross hairs
Optos OCT
optic nerve head
scan
Captures a high density raster scan of OCT images covering a 20 x 20 degrees (6 mm x 6 mm) field of view
centered around the optic nerve head. The Optos OCT
optic nerve head
scan comprises 111 horizontal
line scans.
The optic disc should be in the center for all optic disc scans. Ensure the cross-hairs are centered on the
optic nerve head.
FIGURE 6: Optos OCT
optic nerve head
scan example target and scan lines
Optos OCT
ultra-widefield line
scan
The ultra-widefield line scan can be positioned anywhere within an on-axis
opto
map image. It generates a
cross-sectional OCT image of 20 degrees (6 mm) in length.
Page 26 of 84
Part Number: G110230-003-ENG
English
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