Topcon ALADDIN HW3.0, User Manual

Page: 69 / 170

ALADDIN
- User manual Rev. 19 EN of 10/07/2019
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Figure 47
“Measures” and “Surgical Pre Op Data” frames summarize the values used in the first-step calculation.
“Expected Post Op Cornea” frame gives information about the post surgery patient eye Keratometry, taking
into account the aforementioned SIA and IL.
If the option “Abulafia-Koch correction” is selected the astigmatism is corrected in the “Expected Post Op
Cornea” by taking into account, together with SIA and IL, the nomogram-based correction. Refer to “Abulafia
A, Koch DD, Wang L, Hill WE, Assia EI, Franchina M, Barrett GD: New regression formula for toric intraocular
lens calculation. – Journal of Cataract & Refractive Surgery, 2016 – Elsevier”. If the Toric IOL calculation is
performed using the Abulafia-Koch Correction it is reported in the corresponding Toric IOL report.
As a result, the “Toric IOL” frame, immediately below, details the best toric lens computed automatically by
the system for the manufacturer and model selected previously in the first-step.
From “Available Toric Lenses” table you can choose also a different cylinder value for the lens, based on the
Residual Astigmatism you want to achieve (under-correction/overcorrection). In particular, the best toric lens
value is shown in the central row and (if available) the ones that under-correct above the central row, the
ones that overcorrect below.
At the right side, you can find an image that illustrates the ideal position of the IOL once the implant is in
place and in red the incision location angle.
Under the table, the small icon opens the Toric Rotation Misalignment Simulator (Figure 48).