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20 Total corneal astigmatism for toric IOL
Figure 175: Corneal Power Distribution display showing a TCRP astigmatism of 1.2 D
74°, i.e. lower than KA astigmatism
We aimed to correct the TCA and considering a surgically induced astigmatism of 0.2 D 90°, we
targeted a correction of 1.37 D 76°. A SN6AT4 IOL was implanted at 75°. One month after surgery
the refraction was sph -0.25 cyl -0.25 A 120°. Using the KA data would have led to cylinder
overcorrection.
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