OCULUS Pentacam Interpretation Guide

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14.1 Keratic precipitates
A 50-year-old patient presented with a history of granulomatous uveitis due to a toxoplasmosis
infection. At initial presentation he had numerous large keratic precipitates deposited on the
endothelial surface. In Figure 123 the large precipitates are prominent on the innermost layer of
the densitometry scan. Slit lamp photography was less successful in imaging the precipitates due to
the impossibility of targetingthe endothelial surface with retroillumination (Figure 124). Once the
patient had been started on a course of antibiotics and corticosteroids he showed significant clinical
improvement (Figure 125) and at his two week appointment there was no trace of the previous
keratic precipitates (Figure 126).
14 Corneal Optical Densitometry display
Figure 123: Corneal Optical Densitometry display showing a patient’s endothelial densi-
tometry at his initial presentation
Figure 124: Slit lamp photo of the same
eye at the patient’s initial
presentation

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