ALADDIN
- User manual
Rev. 19 EN of 10/07/2019
71
11.14.4
Post Refractive IOL calculation
In this section, you can calculate intraocular lenses also for patients who have undergone refractive surgery
to correct myopia or hyperopia by using the Camellin-Calossi formula and the Shammas no-history formula
(Figure 50).
These formulae are used with patients who have had prior refractive surgery. Each such patient is unique
and results may vary widely. You should interpret all IOL power recommendations with caution.
In this environment, you need to manually enter certain fundamental data.
Figure 50
The first is the surgeon who performs the operation. As in IOL calculation, the constants may differ from one
surgeon to another.
The second data is the “LT”, i.e. the crystalline lens thickness that can be modified manually.
Next, select the correction type between the options shown below:
Myopic
Hyperopic
Unknown
If the correction type is unknown:
-
it is not possible to select the surgery type
-
it is not possible to choose the Shammas No-History formula
-
to use the Camellin Calossi formula, you must insert in the Input Data the Pachimetry values and the
optic zone diameter.
If the correction type is myopic or hyperopic, you have to select the surgery type performed on the patient
from those listed:
1.
Radial Keratotomy (RK)
2.
Photo Refractive Keratectomy (PRK)
Summary of Contents for ALADDIN HW3.0
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