Associate Professor, Consultant Eye Surgeon & Head of Department CPMC, Wapda Teaching Hospital Complex, Lahore-Pakistan em Central Park Medical College and WAPDA Teaching Hospital Lahore
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Quality vision after cataract surgery Part 2- Success with premium IOL Practice.
Associate Professor, Consultant Eye Surgeon & Head of Department CPMC, Wapda Teaching Hospital Complex, Lahore-Pakistan em Central Park Medical College and WAPDA Teaching Hospital Lahore
1. Quality vision
after
cataract
surgery-III
Success with Premium IOLs
Dr. Zia.ul.Mazhry
FRCS(Edin), FRCS(Glasgow),
FCPS(Pak), CICOphth- (UK)
Life Member OSP
Member American Academy of Ophthalmology
Member European Society of cataract &
Refractive surgery
Associate Professor & HOD
Department of Ophthalmology
Central Park medical college
WAPDA Teaching Hospital
Complex Lahore Pakistan
2. Financial Interest
• Live surgery was followed by discussion on premium IOLs
• Activity Sponsored by ALCON Pakistan
• Material taken from different internet resources
• For education purpose only
3. Objective:
• On completing this lecture, the ophthalmologist
should be able to:
1. Understand the role of premium IOLs in phaco
cataract refractive surgery.
2. To address and discuss the main issues related to
premium IOL practice.
a) Relevant preoperative diagnostic evaluations,
b) patient selection criteria,
c) counselling, and
d) managing expectations
3. Explain the applications, advantages, and
disadvantages of multifocal and toric IOLs
4. Discussion Plan
• Pre test
• Ideal intraocular lens
• Overview of Premium IOLs
• Patient selection
– Understand your patient’s needs
– Make the patient understand your limitations
• Special preoperative and Operative considerations
• Multifocal Iols
• Toric IOLs
• Summary and the Message
5. 1. Which of the following statements is
true regarding multifocal IOLs?
Correct Choice
a The Sulcoflex multifocal is implanted in-the-bag
during routine cataract surgery
b In-the-bag multifocal IOLs may be easily removed in
cases of non-tolerance
c Multifocal IOLs work on the principle of
simultaneous vision
d All current multifocal IOL designs are rotationally
symmetric
6. 2. Which of the following would not be appropriate
advice for a patient prior to undergoing cataract with
premium MF IOL surgery?
Correct Choice
a Reading glasses are likely to be needed after the
operation
b Vision is expected to be good for all distances in
most of the cases
c Surgery is typically performed under topical/local
anesthesia as a day case
d As vision will be improved with surgery, there will
be no compromise at all.
7. 3. If a +20 D single optic AIOL shifts
anteriorly by 0.33mm, the
approximate power change would be
Correct Choice
a 0.01 D
b 0.50 D
c 1.50 D
d 3.33 D
8. 4. The best method for corneal power
calculation is:
Correct Choice
a Manual Keratometer
b Corneal Topographer
c Autorefractokeratometer
d Optical Biometer
9. 5. A patient presents to your practice having
undergone MFIOL implantation in her right eye
four days ago. During history and symptoms, she
report mild halos. What would be the MOST
appropriate course of action?
Correct Choice
a Tell the patient that these are likely to get worse overtime and
they should seek medical advice
b Advise the patient that halos are a common side effect of
MFIOLs, and they are likely to reduce in severity over the next
few weeks
c Tell the patient to stop driving, immediately
d Ignore the symptom and see the patient in two years
10. 7. Multifocal or accommodating IOLs
use the following methods to reduce
spectacle dependence except:
Correct Choice
a Having a diffractive grating on the IOL surface to create
separate images on the retina
b Having zones of different refraction to create separate images
on the retina
c Being able to move slightly forwards within the eye when
focussing at near
d Altering the retinal and optic nerve processing of the images
that reach the retina
11. 8. Concerns that ophthalmologists and
optometrists have with multifocal IOLs
include all of the following except:
Correct Choice
a they are associated with haloes and glare.
b they may reduce contrast sensitivity as compared
with a monofocal IOL
c they increase the risk of postoperative dry eye
d they are sometimes associated with "waxy" or
"foggy" vision
12. 9. The main advantage of a Apodized
diffractive refractive multifocal IOL over
the traditional bifocal multifocal is:
Correct Choice
a this IOL comes in a choice of colours
b this IOL provides better intermediate vision for tasks such a
working on the computer
c This IOL produces x-ray vision for looking through solid objects
d with this IOL inside the eye one does not need the special
glasses to watch 3-D movies
13. 10. Toric IOL is meant to correct:
Correct Choice
a Lenticular astigmatism
b Corneal astigmatism
c Corneal and lenticular astigmatism
d Irregular astigmatism
14. Ideal Intraocular
Lens
– Smaller Incisions
– Surgeon friendly implantation
• Durable and flexible
• Compatible delivery system
– Centration & Fixation in Capsular Bag
– Excellent visual out come with out aberrations
– No loss of contrast sensitivity
– No dysphotopsia
– No Inflammatory response
– No PCO
– Spectacle Independence/seamless accommodation
– No loss of function with time
15. Cataract Surgery-
Refractive Surgery
• Refractive IOLs involve the same skills set as
that of cataract surgery
• Multifocal and accommodating lenses are
dramatically changing the way all eye doctors
practice refractive surgery
16. Understand Your Patient’s
Expectations
• Assess vision function
goals:
– Distance
– Intermediate
– Near
• Determine frequency
and importance of
– Dim and bright light
activities
• Talk with the patient!
• Pre-operative Exclusion
Criteria
– Hypercritical patients
– Patients with unrealistic
expectations
– Occupational night drivers
• Medical Exclusion
– >1.0 D of corneal
astigmatism
– Pre-existing ocular
pathology
– Previous refractive surgery
patients?
17. Mindset of the Presbyopic
Refractive Patient
• Patients are interested in lifestyle, not pathology
and are happy to pay for the enhanced quality of
life
• Old paradigm: Patient want to see better than
they did with their cataracts
• New paradigm: Patients want to see better than
they did before they developed cataracts
19. Explain Their IOL Options
Multi-focal Implant
• Designed to correct vision
near, far, and in-between, for
the best chance at freedom
from glasses.
Toric Implants
• Designed to correct both
cataracts and astigmatism at
the time of surgery. Glasses
will likely be needed for near
vision.
Multifocal Toric Implants
• Provides clear distance
vision. Glasses will likely be
needed for near vision and
possibly for distance vision.
20. < 1.0 D =/> 1.0 D
Regular ? Non-regular ?
AcrySof® IQ
(w/spectacles)
CATARACT - Diagnosed
Corneal Astigmatism ?
IOL Decision Process
• Spectacle Independence ?
• Lifestyle Needs ?
Yes No
AcrySof®
IQ ReSTOR® +3
AcrySof® IQ
AcrySof®
Toric
21. Success with Premium IOLs
Richard L. Lindstrom – August 2009 OSN
Perspective
• Careful patient selection
• Reducing patient expectations
• Achieving the desired refractive result
22. Success with Premium IOLs
Richard L. Lindstrom – August 2009 OSN
– My conclusion after 25 year of studying the
premium IOL field, is that the level of patient
satisfaction is NOT dependent of careful patient
selections
– I do NOT believe that patient satisfaction is really
significantly influenced by extensive efforts to
reduce patient expectations
– Patient selection is LESS IMPORTANT THAN
SURGEON PERFORMANCE if spectacle
independence is the desired outcome
23. Success with Premium IOLs
Richard L. Lindstrom – August 2009 OSN
– Every refractive cataract surgeon must appreciate
that it is the REFRACTIVE OUTCOME THEY
GENERATE, NOT THE PATIENT or EVEN THE
TECHNOLOGY they select, that is the primary
determinant of patient satisfaction and word of
mouth referrals.
26. Introduction
minimizing Surgeon introduced errors
• One of the goals of cataract surgery is to achieve emmetropia or
balance with the fellow eye.
• The spherical component is achieved with the proper IOL
power calculation
– Careful Biometry
– IOL Master
– Water bath ultrasound
• The astigmatic component can be controlled by:
– size and location of the cataract wound
– Toric IOLs
– intraoperative relaxing incisions
– or post-operative
• astigmatic keratotomy,
• wound revision or
• LASIK
27. Biometery
• Repeated As and Ks
• Always have a tangential look while applying A
Scan Probe
• Always Compare Two Eyes
• Do have finalized Refraction with you if already
operated
• Do document Keratometric axis and Plan your
Incision on steeper axis
28. Placement of Incisions
• Clear corneal incisions according to the preoperative
steep meridian determined by keratometery
• The following scheme can be used to
determine the location of clear
corneal incision:
– Superior, Temporal, Nasal,
SuperoTemporal or SuperoNasal
S
ST
SN
T N
29. Surgeon Induced
Astigmatism
• The studies indicate that performing the incision
on steeper according to the preoperative axis in
eyes with significant astigmatism results in an
acceptable outcome
32. The Message-SIEs
• One needs to be vigilant if not able to
correct preexisting errors, at least do not
induce it. We believe it plays a very vital
role in improvement of quality of vision
after cataract surgery.
33. Place the IOL in fetal position and
expect a normal safe delivery
34. What is Apodization … how does it
work?
• It’s a light
management system
• Microscopic steps
sends light where
you need it, when
you need it
36. Anterior Apodized Diffractive Aspheric Surface
9 apodized diffractive steps for +3.0D add
power and balanced light energy management
Negative 0.1 micron spherical aberration factor
corrects for the positive spherical aberration of
the cornea
Posterior Toric Lens Surface
Posterior toric surface with axis marks
Allows the lens to correct pre-existing
corneal
astigmatism
36
37. AcrySof Single Piece
Platform AcrySof Restore
• Improve quality of distance vision while
maintaining near and intermediate vision
Apodized
diffraction
39. AcrySof® Toric Axis Indicator Marks
Toric IOL alignment with the
corneal steep axis adds the
corrective cylinder power to
the corneal flat axis. This
will ‘neutralize’ the
astigmatic cornea.
41. Marking of the Eye
• Reference Marks (pre-op)
– placed at limbus in two locations 180 degrees apart (3
o’clock and 9 o’clock)
– patient in upright position (cyclorotation)
• Axis Marks (intra-op)
– Axis marks are placed on the eye using pre-op reference
marks for alignment
– Dell Astigmatism Marker used to mark the steep axis of
cornea with which the IOL is to be aligned
50. Surgeon Targeting: “How are you
addressing pre-operative corneal
astigmatism with your patients?
51. How Limbal Relaxing
Incisions (LRI) Work
“Coupling” - The amount of corneal flattening induced
by the incision is equal to the amount of steepening that occurs
90 degrees away
• With this, the spherical equivalent required for the patient remains
the same, and the surgeon does not have to adjust the IOL power
53. Calculator input screen
Surgeon/Patient
Data
Keratometry Data
1. SE power
2. SIA factor
3. Incision location
Internal Use Only – For Sales Training Purposes
54. Calculator output screen
Calculation Provides:
• Appropriate SN6ATT IOL model
• Optimal axis location of the IOL
• Anticipated residual astigmatism
Note: Surgeons should print copies of final output
for reference in the O.R. and patient chart.
Internal Use Only – For
55. 1. Online
Calculator
2. Mark
cornea
(pre / intra-op)
3.
Standar
d Phaco
Procedu
re
4. IOL
Delivery in
the bag
Monarch®
7. Final
alignment
IOL
5. Gross
Align
IOL
6. OVD
Removal
I/A
Pre-op & Intra-op
Tasks
Internal Use Only – For Sales Training Purposes
56. 1. Which of the following statements is
true regarding multifocal IOLs?
Correct Choice
a The Sulcoflex multifocal is implanted in-the-bag
during routine cataract surgery
b In-the-bag multifocal IOLs may be easily removed in
cases of non-tolerance
c Multifocal IOLs work on the principle of
simultaneous vision
d All current multifocal IOL designs are rotationally
symmetric
57. 2. Which of the following would not be appropriate
advice for a patient prior to undergoing cataract with
premium MF IOL surgery?
Correct Choice
a Reading glasses are likely to be needed after the
operation
b Vision is expected to be good for all distances in
most of the cases
c Surgery is typically performed under topical/local
anesthesia as a day case
d As vision will be improved with surgery, there will
be no compromise at all.
58. 3. If a +20 D single optic AIOL shifts
anteriorly by 0.33mm, the
approximate power change would be
Correct Choice
a 0.01 D
b 0.50 D
c 1.50 D
d 3.33 D
59. 4. The best method for corneal power
calculation is:
Correct Choice
a Manual Keratometer
b Corneal Topographer
c Autorefractokeratometer
d Optical Biometer
60. 5. A patient presents to your practice having
undergone MIOL implantation in her right eye
four days ago. During history and symptoms, she
report mild halos. What would be the MOST
appropriate course of action?
Correct Choice
a Tell the patient that these are likely to get worse overtime and
they shouldseek medical advice
b Advise the patient that halos are a common side effect of
MIOLs, and they are likely to reduce in severity over the next
few weeks
c Tell the patient to stop driving, immediately
d Ignore the symptom and see the patient in two years
61. 6. You examine a patient who has been implanted, bilaterally
with AIOLs two months ago. You refract the patient and find
that his distance prescription is plano in both eyes and he has
no sign of any other lenticular anomaly. During history and
symptoms, however, the patient complains that he can no
longer read his paper diary. What would be the MOST
appropriate course of action?
Correct Choice
a Tell the patient that the IOLs need to be removed by the
ophthalmologist
b Refer the patient for wavefront-guided keratorefractive surgery
to correct his spherical aberration
c Explain that there is little that can be done and that he will
have to get used to it
d Advise the patient that AIOLs do not always restore near
vision, and that he should be prescribed a near addition
62. 7. Multifocal or accommodating IOLs
use the following methods to reduce
spectacle dependence except:
Correct Choice
a Having a diffractive grating on the IOL surface to create
separate images on the retina
b Having zones of different refraction to create separate images
on the retina
c Being able to move slightly forwards within the eye when
focussing at near
d Altering the retinal and optic nerve processing of the images
that reach the retina
63. 8. Concerns that ophthalmologists and
optometrists have with multifocal IOLs
include all of the following except:
Correct Choice
a they are associated with haloes and glare.
b they may reduce contrast sensitivity as compared
with a monofocal IOL
c they increase the risk of postoperative dry eye
d they are sometimes associated with "waxy" or
"foggy" vision
64. 9. The main advantage of a Apodized
diffractive refractive multifocal IOL over
the traditional bifocal multifocal is:
Correct Choice
a this IOL comes in a choice of colours
b this IOL provides better intermediate vision for tasks such a
working on the computer
c This IOL produces x-ray vision for looking through solid objects
d with this IOL inside the eye one does not need the special
glasses to watch 3-D movies
65. 10. Toric IOL is meant to correct:
Correct Choice
a Lenticular astigmatism
b Corneal astigmatism
c Corneal and lenticular astigmatism
d Irregular astigmatism
66. 1. Which of the following statements is
true regarding multifocal IOLs?
Correct Choice
a The Sulcoflex multifocal is implanted in-the-bag
during routine cataract surgery
b In-the-bag multifocal IOLs may be easily removed in
cases of non-tolerance
c Multifocal IOLs work on the principle of
simultaneous vision
d All current multifocal IOL designs are rotationally
symmetric
67. 2. Which of the following would not be appropriate
advice for a patient prior to undergoing cataract with
premium MF IOL surgery?
Correct Choice
a Reading glasses are likely to be needed after the
operation
b Vision is expected to be good for all distances in
most of the cases
c Surgery is typically performed under topical/local
anesthesia as a day case
d As vision will be improved with surgery, there will
be no compromise at all.
68. 3. If a +20 D single optic AIOL shifts
anteriorly by 0.33mm, the
approximate power change would be
Correct Choice
a 0.01 D
b 0.50 D
c 1.50 D
d 3.33 D
69. 4. The best method for corneal power
calculation is:
Correct Choice
a Manual Keratometer
b Corneal Topographer
c Autorefractokeratometer
d Optical Biometer
70. 5. A patient presents to your practice having
undergone MIOL implantation in her right eye
four days ago. During history and symptoms, she
report mild halos. What would be the MOST
appropriate course of action?
Correct Choice
a Tell the patient that these are likely to get worse overtime and
they shouldseek medical advice
b Advise the patient that halos are a common side effect of
MIOLs, and they are likely to reduce in severity over the next
few weeks
c Tell the patient to stop driving, immediately
d Ignore the symptom and see the patient in two years
71. 6. You examine a patient who has been implanted, bilaterally
with AIOLs two months ago. You refract the patient and find
that his distance prescription is plano in both eyes and he has
no sign of any other lenticular anomaly. During history and
symptoms, however, the patient complains that he can no
longer read his paper diary. What would be the MOST
appropriate course of action?
Correct Choice
a Tell the patient that the IOLs need to be removed by the
ophthalmologist
b Refer the patient for wavefront-guided keratorefractive surgery
to correct his spherical aberration
c Explain that there is little that can be done and that he will
have to get used to it
d Advise the patient that AIOLs do not always restore near
vision, and that he should be prescribed a near addition
72. 7. Multifocal or accommodating IOLs
use the following methods to reduce
spectacle dependence except:
Correct Choice
a Having a diffractive grating on the IOL surface to create
separate images on the retina
b Having zones of different refraction to create separate images
on the retina
c Being able to move slightly forwards within the eye when
focussing at near
d Altering the retinal and optic nerve processing of the images
that reach the retina
73. 8. Concerns that ophthalmologists and
optometrists have with multifocal IOLs
include all of the following except:
Correct Choice
a they are associated with haloes and glare.
b they may reduce contrast sensitivity as compared
with a monofocal IOL
c they increase the risk of postoperative dry eye
d they are sometimes associated with "waxy" or
"foggy" vision
74. 9. The main advantage of a Apodized
diffractive refractive multifocal IOL over
the traditional bifocal multifocal is:
Correct Choice
a this IOL comes in a choice of colours
b this IOL provides better intermediate vision for tasks such a
working on the computer
c This IOL produces x-ray vision for looking through solid objects
d with this IOL inside the eye one does not need the special
glasses to watch 3-D movies
75. 10. Toric IOL is meant to correct:
Correct Choice
a Lenticular astigmatism
b Corneal astigmatism
c Corneal and lenticular astigmatism
d Irregular astigmatism
76. What a Surgeon needs for the
patient to attain quality
vision after Cataract surgery?
– Enhance Two Handed Skills
– Try to manage patient expectations
– Minimize Complications
– Select IOL based on objective data
– Avoid small errors to add up into a big surprise
• Repeated As and Ks
– minimize SIA
• Incision Placement at steeper meridian, wound size
– Aim at Thorough Cortical clearance&
– In the Bag Implantation with sub optical Rhexis
77. Remember that you are
now a refractive surgeon
Under promise
Over achieve
Celebrate success