Analysis Protocols
Stratus OCT User Manual PN 2660021134133 A
6-20
Note: Subject ethnicity was self-reported by the patients in the population
comprising the normative database but was NOT used as a variable in constructing
the normative database for RNFL thickness. Normative data will not appear for
patients under 18 years of age. The RNFL normative data appears only when you
analyze either Fast RNFL Thickness (3.4) scans or a single RNFL Thickness (3.4)
scan at the default 512 A-scans. RNFL norm
ative data will not appear when you
analyze two or more RNFL Thickness (3.4) scans that have been averaged, or if
you analyze a Fast RNFL Thickness (3.4) scan from which scans have been
deselected.
Tabular Data Defined
Imax/Smax: the maximum thickness in the inferior quadrant
divided by the maximum thickness in the superior quadrant.
Smax/Imax:
the maximum thickness in the superior quadrant
divided by the maximum thickness in the inferior quadrant.
Smax/Tavg:
the maximum thickness in the superior quadrant
divided by the average thickness in the temporal quadrant.
Imax/Tavg: th
e maximum thickness in the inferior quadrant divided
by the average thickness in the temporal quadrant.
Smax/Navg:
the maximum thickness in the superior quadrant
divided by the average thickness in the nasal quadrant.
Max-Min: the
maximum thickness minus the minimum thickness.
Smax: the maximum thickness in the sup
erior quadrant.
Imax: the maximum
thickness in the inferior quadrant.
Savg:
the average thickness in the superior quadrant.
Iavg: the aver
age thickness in the inferior quadrant.
Avg. Thickness: th
ickness averaged over all 256 test points
RNFL Thickness Map
Application: Select RNFL Thickness Map to obtain for each eye two maps of RNFL thickness
in an annular area around the optic disc (peripapillary region). You can apply this protocol
to one OD and/or one OS scan group made from the (F
AST) RNFL Map or Concentric 3
Rings protocols.
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