Case 1: Low Pns And Low Ept; Case 2: High Pns And High Ept - OCULUS Pentacam Interpretation Manual

19 Dependency of effective phacoemulsification
time on Pentacam ® Nucleus Staging (PNS)

19.2 Case 1: Low PNS and low EPT

In OD of this caucasian female patient it can be seen by the relatively high scatter that the lens is
not clear. Accordingly, the Pentacam® shows a PNS of 1. Please note also the overview of further
details on lens opacification such as average and maximum density. For this patient an EPT of 2.99
seconds was calculated.
Figure 168: Scheimpflug Image with the PNS module showing a PNS of 1

19.3 Case 2: High PNS and high EPT

In OD of this caucasian male patient one sees immediately that lens clarity is considerably reduced
compared to the first patient. This higher opacification level is also reflected in a higher PNS of 3.
The average lens density also shows a clear increase. Despite the higher lens density, this surgery
was also performed without any complications; however, it required significantly more EPT, at
11.90 seconds.
Figure 169: Scheimpflug Image with the PNS module showing a PNS of 3
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