Three to 6-month follow-up after bilateral implantation of ReSTOR aspheric 3D

1
Three to 6-month follow-up after bilateral
implantation of ReSTOR aspheric 3D
Thomas Kohnen, MD Department of
Ophthalmology Goethe University Frankfurt am
Main, Germany Visiting Professor, Cullen Eye
Institute Baylor College of Medicine, Houston,
TX, USA This research was supported by Alcon
Laboratories, Inc., but Dr Kohnen has no
financial interest in the products presented.
2
Methodology

• Twenty candidates for bilateral implantationof
  multifocal IOLs
• Expressed interest in presbyopic correction
• Need for intermediate vision
• Evaluations
• Preoperatively and at 1, 3 and 6 months
  postoperative
• Objective measures
• Visual acuity
• Distance (high and low contrast)
• Intermediate (50, 60, 70 cm)
• Near (40 cm and near at preferred distance)
• Defocus curve
• Subjective measures
• Patient questionnaires

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ReSTOR 3 D Multifocal IOL

• Central 3.6-mm apodized diffractive disk
• Adds 3 D at lens plane,yielding 2.5 D at the
  spectacle plane
• Of available light energy,
• half to near focus
• half to distance focus

Outer refractive annulus, devoted to distance
focus
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Mean Uncorrected Visual Acuity 6 month
postoperative
20/20, J1
20/25, J1
Visual acuity, Snellen Jaeger
n17
20/32, J2
Preferred near distance 37 4 cm
5
Intermediate UCVA at 50cm 6
month postoperative
n17
6
Intermediate UCVA at 60cm 6
month postoperative
n17
7
Intermediate UCVA at 70cm 6
month postoperative
n17
8
Mean Combined UCVA 6
months postopereative

• Combined UCVAs
• Distance
• Intermediate 50 cm, 60 cm, 70 cm
• Near at preferred distance

n17
9
Low Contrast Acuity3 months postoperative
photopic Conditions
mesopic Conditions
n19
n19
10
Visual Disturbances
5
halo
glare
4
night vision
3
average difficulty score
2
1
0
Preop
3
6
Postoperative time, months
For the same 17 patients at all time pointsBased
on a 5-point scale 1 no difficulty, 5 severe
difficulty
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Conclusion

• Bilateral implantation with ReSTOR SN6AD1 IOLs
  provided patients with good vision on all
  measures
• Near vision
• Preferred near focus was 37 cm
• Average UCVA was lt0.1 logMAR, J1 or better
• Depth of optimal focus spread from 40 cm to 50 cm
• Intermediate vision
• Average UCVAs for all intermediate distances
  were0.18 logMAR or better (equivalent to 20/30
  Snellen, J2)
• Distance vision
• Good high-contrast and low-contrast visual acuity
• Visual disturbances generally decreased preop to
  postop