Zeiss 3000 - Page 64

Scan Acquisition Protocols
Stratus OCT User Manual PN 2660021134133 A
4-4
Exiting Scans
You may exit any scan at any time and return to the MAIN WINDOW by clicking the Cancel
button or any of the three Select toolbar buttons.
• Line, Circle, Proportional Circle and the four Fast Scan protocols permit you to repeat
the scan protocol multiple times. You must click Cancel to exit the S
CAN ACQUISITION
W
INDOW.
• The other scan protocols consist of either a single scan or a limited number of scans.
For these patterns, the Stratus OCT returns you to the M
AIN WINDOW automatically
after you save the last scan in the series.
Exiting a Scan Series before Completion
• If you exit a scan series before completing all the scans in a set, the ones you have
already saved are retained. They will appear in the list of the patient's scans.
Which Scan Parameters Can Be Adjusted When
Scan parameters adjustable for some or all scan protocols include size, number of lines,
angle, number of A-scans, placement of scan pattern, fixation LED and landmark. The
individual
Scan Protocol Descriptions, Options And Tips (starting on page 4-6)
explain which parameters you can adjust for each protocol. However, the following rules
apply, with the noted exceptions. These rules are not repeated for each individual protocol.
• Scan and fixation LED placement are always adjustable—whenever the video image
is live.
• Initial placement depends on the preceding scan in a series. When you save one scan
in a series of scans, the next scan in the series begins with the same placement of the
scan pattern, landmark and fixation LED.
• Exception: The only exception is the RNFL Map protocol, which places the scan
pattern (but not the fixation LED) back in the center.
RNFL Thickness Average Circle, Proportional Circle, (Fast) RNFL Thickness (3.4), RNFL Thickness
(2.27xdisc) or Nerve Head Circle: 1 OS and/or 1 OD of same radius around
disc
RNFL Thickness Map (Fast) RNFL Map, Concentric 3 Rings: 1 OS and/or 1 OD group around disc
RNFL Thickness Change Circle, Proportional Circle, (Fast) RNFL Thickness (3.4), RNFL Thickness
(2.27xdisc) or Nerve Head Circle: 2 OS and/or 2 OD of same radius around
disc
RNFL Thickness Serial Analysis Circle, Proportional Circle, (Fast) RNFL Thickness (3.4), RNFL Thickness
(2.27xdisc) or Nerve Head Circle: Up to 4 OD and/or 4 OS groups of same
radius around disc.
GPA Advanced Serial Analysis RNFL Thickness (3.4) or Fast RNFL Thickness (3.4): Up to 8 OD and/or 8 OS
groups of same radius around disc.
Optic Nerve Head (Fast) Optic Disc: 1 group on disc
Analysis Protocol Designed for Scan Group(s)