ALADDIN - User manual Rev. 19 EN of 10/07/2019
The Scale buttons allow to switch between Absolute and Normalized (adjustable) scale color steps. When
Normalized is pressed the button is replaced with controls that allows to adjust the color step for the current
topography map. Minimum step size is 0.25 D or 0.05 mm depending on the selected measure unit.
Refer to section 13.2 for more settings relative to the topographic map representation.
The buttons at the screen top show the topographic map indices (see following paragraphs for details):
K: Keratometry
I: Keratorefractive indices
KC: Keratoconus
P: Pupil
12.1.1 Keratometry
Press the “K” button to display the keratometric data on the 3 mm, 5 mm and 7 mm zones, as shown in Figure
60 (by settings the zones can be set to 2,4,6 mm).
12.1.2 Keratorefractive indices
Press the ”I” button to view the keratorefractive indices:
Figure 61
Astigmatism: Astigmatism at 3 and 5 mm (or 2 and 4 mm)
Pupil Avg: Average pupil power for a pupil of 4.5 mm
Asphericity: Asphericity of the cornea at 8 mm diameter
Spherical Aberration: Longitudinal spherical aberration of a 4.5mm diameter cornea area
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