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Performing
Calculations
Overview Performing IOL calculations with the Accutome A-Scan
Plus can be as simple as pressing the Calculate button.
There are numerous features available to enhance the
calculation process.
The Accutome A-Scan Plus instantly calculates
emmetropic and targeted ametropoic IOL powers for
dozens of lenses, viewed three at a time, using the axial
length from the average of valid waveforms, a single
waveform, or manually entered AXL.
Calculating the
Lens
The IOL calculation provides the required power of IOLs
using a measured or entered axial length, entered K1
and K2 values, and entered desired post operative
refraction.
All calculations are made on the Calculate IOL Screen.
To access the Calculate IOL Screen press the Calculate
button, located at the right side of the instrument.
Calculation after Corneal Refractive Surgery
The A-Scan also has the advanced capability to
calculate IOLs for patients that have had corneal
refractive surgery.
For patients who have had corneal surgery, the
characteristics and power of the cornea have been
altered.
Calculations for post surgery patients are made using
the Double K method, which uses both the pre and post
corneal refractive surgery K values. For more
information on the Double K method refer to
page 207 of
this manual.
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