Second Edition Mazen M Sinjab MD MS CABOphth PhD
Assistant Professor Damascus University Consultant in Anterior Segment and Refractive Surgery Senior Lecturer in Al Mouasat University Hospital,
Damascus, Syria
Supervisor of Residency Program in the Ophthalmology Department, Damascus University Founder and attending Surgeon in Al Zahra Medical Group,
Damascus, Syria
Research Consultant in Elite Medical Center in Riyadh Kingdom of Saudi Arabia (KSA) mazen.sinjab@yahoo.com www.mazensinjab.com
7PREFACE TO THE SECOND EDITION
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Corneal Topography in Clinical Practice (Pentacam System)—Basics and Clinical Interpretation
First Edition: 2009
Second Edition: 2012
9789350255759
Printed at
5Dedicated to
My dear father Mahamad (may God rest his soul), who planted in my soul the love of excellence.
I will mention his name with my name all my life
My mother Almasah (may God rest her soul), who planted in my heart the love of poor and helping others
For the second edition of this internationally successful book, I have worked for two years—researching, collecting data, and trying to improve the book. In the edition, I added many new figures which serve in more understanding of basics and clinical concepts. I also added more data in Chapters 3, 8, 12, 13, 16, 17 and 19. I addressed a completely new Chapter 20 “Corneal Topography in Cataract Surgery”.
As in the first edition, data in the book were obtained and gathered from the User Manual of the Pentacam HR, international conferences, refractive journals, personal contacts with many refractive professors and experts, and of course, self experience. The strategy in compiling the book is combining excellence in pictorial quality with a concise but ordered text.
I have aimed the book at all those who need some initial assistance in reading and clinical interpretation of corneal topography. As the ophthalmology editor, I take full responsibility for any error and look forward to being further educated.
I thank teamwork in Al Zahra Medical Group, Damascus, Syria, for the laborious work in collecting figures and data.
And above all, I thank my family for letting me work for love…
9PREFACE TO THE FIRST EDITION
Taking the right decision in laser refractive surgery depends to a great extent on good reading of corneal topography and its clinical interpretation. This is very important for having the aimed results and avoiding postoperative complications.
Data in this book were obtained and gathered from the user manual of the Pentacam, international conferences, refractive journals, personal contacts with many refractive professors and of course self-experience.
The strategy in compiling the little book is combining excellence in pictorial quality with a concise but ordered text.
I have aimed the book at all those who need some initial assistance in reading and clinical interpretation of corneal topography. As the ophthalmology editor, I take full responsibility for any error and look forward to being further educated.
Mazen M Sinjab
13ABBREVIATIONS
AB
Asymmetric bow-tie
AK
Astigmatic keratotomy
ATR
Against-the-rule
CxL
Corneal crosslinking
D
Diopter(s)
EBMD
Epithelial basement membrane dystrophy
FFKC
Forme fruste keratoconus
IOL
Intraocular lens
IS
Inferior steep
KC
Keratoconus
LRI(s)
Limbal relaxing incision(s)
MA
Manifest astigmatism
PLK
Pellucid-like keratoconus
PMD
Pellucid marginal degeneration
RGP
Rigid gas permeable
SB
Symmetric bow-tie
SIA
Surgically-induced astigmatism
SRAX
Skewed radial axis index
SS
Superior steep
TA
Topographical astigmatism
WTR
With-the-rule