ALADDIN - User manual Rev. 19 EN of 10/07/2019
The recommended TORIC IOL and Axis alignment for the targeted refractive outcome is displayed. The axis
that provides the minimum astigmatism for the existing IOL is calculated as well as the rotation in degrees
from the current axis of the existing implanted IOL.
The SIA and Optimised Lens Factor/A Constant are provided according to the pre and post op Keratometry
and the refractive outcome.
11.14.6 Olsen Calculator
Olsen Calculator is an optional module: ask your distributor for details.
The Dr. Olsen’s formula is based on standard paraxial ray tracing using standard keratometry of the anterior
surface of the cornea and optical biometry of the eye. The IOL power calculation methodology using ray
tracing and improved algorithms to predict the position of the IOL inside the eye is intellectual property
protected by international law. It includes a toric calculator which is based on a proprietary method to
account for the non-measured posterior surface of the cornea.
Olsen Spherical IOL (Dr. Olsen formula)
Olsen Spherical IOL calculator performs calculations of spherical IOLs using the Dr. Olsen’s formula.
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