Tomey TMS-5, Инструкция по эксплуатации, Страница: 114 / 216

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clinically-determined keratoconus patterns, and other
patterns that in particular include the normal eye,
astigmatism, Pellucid marginal corneal degeneration,
CL warpage, PRK, Radial Keratotomy (RK), and
penetrating keratoplasty.
Reported sensitivity = 100%
Particularity = 100%
Accuracy = 100%
(Ophthalmol. Vis. Sci., 1997, 38, 2290 - 2229) The
Smolek/Klyce index shows the Keratoconus Severity
Index (KSI). The KSI is determined by using a neutral
network model and decision tree analysis. Different
from the KCI described below, the KSI linearly
increases more or less as the keratoconus progresses.
This variable is used to trace the status of the
disease. When the KSI reaches 0.15, it is determined
that keratoconus is doubtful. When the KSI reaches
0.30 or higher, the eye is clinically determined to be
keratoconus.
Klyce/Maeda index
The Klyce/Maeda system indicates various regression
analysis results of KCI (Keratoconus Index) or the other
indices listed below. This system predicts whether
there is a pattern clinically assumed to be keratoconus,
and indicates the possibility of keratoconus in “%”,
ranging from 0% (there is no pattern that seems to be
keratoconus) to 1 – 95% (there are patterns that may
indicate keratoconus).
● SK1 (Simulated Keratometry)
The SK1 is obtained by using the average of the
6th to 8th rings on all meridians, according to the
refractive power shown on the corneal surface. The
SimK1 indicates the highest refractive power and
corresponding meridian axis.