IOL optics and
quality of vision
make in trying to attain this goal. The
second trend is the advancement of diag-
nostic and surgical technologies that are
helping to tighten the standard deviation
in cataract surgery, bringing more eyes
to 20/20 or better visual acuity postoper-
atively. As quantity of vision edges closer
to the goal, it may be time for renewed
emphasis on quality of vision.
By considering important material
and design features like refractive index,
spherical and chromatic aberration,
glistenings, and chromophores, we can
make choices in clinical practice that
improve both quantity and quality of
vision.
For this supplement, I have assem-
bled a dynamic group of experts in the
field to explore the principles of optics
that contribute to high quality of vision
and patient satisfaction.
I
n evaluating IOLs, surgeons typically
think about the lens material and
design from a structural perspective:
How stable is the lens in the bag?
Does the edge prevent lens epithelial
cell migration? Less often, perhaps,
do surgeons consider how the lens
material and design affect image quality.
Our attention was first drawn to
image quality several years ago, when
spherical aberration garnered a signifi-
cant amount of attention. The result has
been the popularization of aspheric IOLs,
to the benefit of our patients.
Two important trends are now
changing how we think of cataract
surgery. The first is presbyopia-correcting
IOLs. The desire to achieve youthful vi-
sion for a spectacle-independent lifestyle
has raised expectations and increased
awareness of the visual tradeoffs we
Daniel H. Chang, MD
(moderator), is in private practice
at Empire Eye and Laser Center
in Bakersfield, Calif. He is a
consultant for Abbott Medical
Optics, Allergan, Carl Zeiss Meditec,
and Omega Ophthalmics. He can be
contacted at 661-325-3937 or
dchang@empireeyeandlaser.com.
Sumit "Sam" Garg, MD,
is interim chair of clinical
ophthalmology and medical
director at the Gavin Herbert Eye
Institute, University of California,
Irvine. He is a consultant for Abbott
Medical Optics and a speaker for
Allergan. He can be contacted at
949-824-0327 or gargs@uci.edu.
Jeremy Kieval, MD,
is in group practice with
Lexington Eye Associates in
Boston. He is a consultant and
speaker for Abbott Medical Optics,
Alcon, and Allergan. He can be
contacted at 781-862-1620 or
jkieval@gmail.com.
Joseph J.K. Ma, MD, FRCSC,
is an assistant professor at the
University of Toronto, Toronto,
Canada. He is a consultant for
several ophthalmic companies
including Alcon, Abbott Medical
Optics, and Bausch + Lomb.
He can be contacted at
joseph.ma@utoronto.ca.
Gary N. Wörtz, MD,
is in private group practice at
Commonwealth Eye Surgery in
Lexington, Ky., and is the chief
medical officer of Omega
Ophthalmics and a consultant for
Alcon and Carl Zeiss Meditec. He
can be contacted at 859-224-2655
or garywortzmd@gmail.com.
Daniel H. Chang, MD
Defining excellence
in IOL optics
Supplement to EyeWorld
December 2014
Supported by an independent educational grant from Abbott Medical Optics
