OCULUS Pentacam Interpretation Guide

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10.1.3 Strategy on how to go through the exams
The way I usually go through the exams is:
Î Look at anterior elevation first
Î Look at posterior elevation
Î Look at the pachymetry and thickness distribution. Off-center distribution of corneal
thickness is highly suspicious
Î Look at the symmetry of both eyes. If one eye is abnormal, usually both eyes are abnormal
Î Look at curvature last
Note:
The above relates to elevation island patterns, not astigmatism. These numbers pertain to elevation
in the central and paracentral region in an island pattern.
10.2 Normal, astigmatic cornea
This 4 Maps Selectable display (Figure 58) shows a normal with-the-rule astigmatic cornea (both
anterior and posterior surfaces). The sagittal curvature appears normal as it would be expected
from the normal symmetric anterior elevation, and the pachymetry map reveals a normal thickness
with a normal pachymetry distribution.
DIAGNOSIS - normal astigmatic cornea
Figure 58: 4 Maps Selectable showing an astigmatic cornea
10 Screening for refractive surgery

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