3-87
● Instantaneous
Displays the steep axis and at axis in more detail than
Orthogonal. This clearly shows that the astigmatism
axes do not necessarily intersect radially or at right
angles. It will not be displayed if astigmatism is less
than 0.5 D.
● Zonal
Shows two each of steep axes and at axes within the
range of 3.0, 5.0, and 7.0 mm from the center, and the
curvature (in diopter or mm). At the same time, these
values are listed in the “Stats Text Box. If astigmatism
is less than 0.5 D, the data cannot be displayed.”
(Fig. 3)
(Fig. 4)
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