OCULUS Pentacam Interpretation Guide

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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.
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 168: Scheimpflug Image with the PNS module showing a PNS of 1
Figure 169: Scheimpflug Image with the PNS module showing a PNS of 3

OCULUS Pentacam Specifications

General

Measurement Time	Less than 2 seconds
Corneal Coverage	Up to 12 mm
Software	Pentacam Software
Data Transfer	USB
Corneal Topography	Yes
Display	External monitor required
Measurement Principle	Scheimpflug imaging
Camera	Rotating Scheimpflug camera
Light Source	Blue LED
Pachymetry	Yes
Anterior Chamber Analysis	Yes
Imaging Principle	Scheimpflug imaging
Fixation	Internal
Power Supply	100-240 V, 50/60 Hz
Resolution	High resolution
Lens Density Measurement	Yes
Dimensions	Varies depending on model and configuration
Weight	Varies by model, check manufacturer specifications
Number of Images	25 or 50