OCULUS Pentacam Interpretation Guide

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25 Orthokeratology, general screening
by Alain-Nicolas Gilg, MD
A 34-year-old male presented with the request to have his soft contact lenses changed because of
progressive intolerance during the day.
Subjective refraction resulted in a visual acuity of
 OD: sph -2.50
 OS: sph -1.00
The Pentacam® Show 2 Exams display showed an optimal eccentricity on the 30° meridian of both
eyes, namely 0.50 in OD and 0.49 in OS, permitting us to propose an orthokeratology treatment to
this patient (Figure 221).
After fitting the lenses, examinations prior to midday revealed a good visual acuity of 0.8 on day 1
and of 1.0 on days 8 and 28.
Figure 221: Show 2 Exams of OD & OS prior to orthokeralotogy
25 Orthokeratology, general screening

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