OCULUS Pentacam Interpretation Guide

149
21 Overview about IOL power calculation
formulas for different eye types
patient group IOL-calculator/formula where to find value paper
normal eyes standard historical
methods (SRK I; SRK II;
Hollady I; Holladay II;
SRKT; Hoffer Q; Haiges
and many others)
Cataract Pre-OP Display Sim K's and other
values depending to the
used formula
Scheimpflug Corneal Power
Measurements for Intraocular
Lens Power Calculation in
Cataract Surgery - (Elie Saad,
Maya C. Shammes and H. John
Shammes) - American Journal
of Ophthalmology, Septemner
2013
post RK eyes ASCRS-calculator:
http://www.iolcalc.org/
Corneal Power
Distribution display,
Cataract Pre-OP Display
Axial/Sagittal Front 4.0
mm; settings: Zone/
Pupil/Km/Asti; CT_Min
New algorithm for post-radial
keratotomy intraocular lens
power calculations based on
rotating Scheimpflug camera
data - (Richard Potvin, OD,
Warren Hill, MD) - J Cataract
Refract Surg 2012; © 2012
ASCRS and ESCRS
post myopic
LASIK without
history
ASCRS-calculator
http://www.iolcalc.
org/ (Potvin/Shammas/
Hill) no history,
BESST II, ray-traycing
formulas (Phaco Optics
& Okulix), EKR65 +
Holladay consultant,
A-P calculator from Dr.
Negishi
Corneal Power
Distribution display,
Cataract Pre-OP Display,
Holladay Report
True Net Power (TNP)
4,0 mm; settings:
Zone/Apex/Km/Asti;
BESSt and ray tracing
formulas (Phaco Optics,
Okulix) are linked via
interface
New algorithm for intraocular
lens power calculations
after myopic laser in situ
keratomileusis based on
rotating Scheimpflug camera
data - (Richard Potvin, OD,
Warren Hill, MD) - J Cataract
Refract Surg 2015; 41:339–347
© 2015 ASCRS and ESCRS
post myopic
LASIK with
history
double K-methode,
BESST II, ray-traycing
formulas (Phaco Optics
& Okulix), EKR65 +
Holladay consultant
Cataract Pre-OP Display,
Holladay Report
Sim K's or EKR65 +
other values depending
to the formula, BESSt
and ray tracing
formulas (Phaco Optics,
Okulix) are linked via
interface
for every eye theoretically ray tracing
formulas like Oculix,
Phaco Optics, EKR65 +
Holladay consultant
Corneal Power
Distribution display,
Cataract Pre-OP Display,
Holladay Report
Sim K's or EKR65 +
other values depending
to the formula, BESSt
and ray tracing
formulas (Phaco Optics,
Okulix) are linked via
interface
Alcon toric IOL Alcon-calculator:
http://www.
acrysoftoriccalculator.
com/
Corneal Power
Distribution display
Total Cornea Refractiv
Power (TCRP) 3,0 mm;
settings: Zone/Pupil/
Km/Asti
An Analysis of the Factors
Influencing the Residual
Refractive Astigmatism After
Cataract Surgery With Toric
Intraocular Lenses - (Giacomo
Savini and Kristian Næser) -
Investigative Ophthalmology &
Visual Science, February 2015,
Vol. 56, No. 2, 829
Table 11: Overview about IOL power calculation formulas for different eye types
status September 2015
21 Overview about IOL power calculation
formulas for different eye types

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