Aphakic refraction Aphakic refraction Spherical power - - PowerPoint PPT Presentation

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Aphakic refraction Aphakic refraction Spherical power - - PowerPoint PPT Presentation

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12/3/2016 Zeiss, AMO, Clarity: consultant ORA/Alcon: NFI Consulting fees donated to ASCRS Foundation (Himalayan Cataract Project) I have the following financial interests or relationships to disclose: Abbott Medical Optics: C Allergan, Inc.:

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12/3/2016 1

Consulting fees donated to ASCRS Foundation (Himalayan Cataract Project)

2

Zeiss, AMO, Clarity: consultant ORA/Alcon: NFI

I have the following financial interests or relationships to disclose:

Abbott Medical Optics: C Allergan, Inc.: L Calhoun Vision Inc: C,O Clarity: C,O Eyenovia: O ICON bioscience: C,O Iantech: C,O Mynosys: C,O Slack: R PowerVision Inc: C,O Versant Ventures: O Carl Zeiss: C

  • Aphakic refraction
  • Spherical power calculation
  • Cylindrical power and axis
  • Pseudophakic refraction
  • Confirm spherical power ???
  • Aphakic refraction
  • Spherical power calculation
  • Cylindrical power and axis
  • Pseudophakic refraction
  • Confirm spherical power ???
  • Adjust cylinder treatment
  • Toric axis
  • Astigmatic keratotomy
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12/3/2016 2

Population

Outcomes

N 246

  • 1. Post LASIK/PRK – spherical
  • 2. Toric – sphere/cylinder/axis
  • 3. Astigmatic Keratotomy
  • 4. Multifocal
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SLIDE 3

12/3/2016 3

  • Axis Alignment – Preop target
  • Discrepency – topo/K’s
  • Proper head alignment by staff (topo, K’s)
  • Ink marks aligned?
  • Effect of incision
  • Cylinder power
  • Discrepency – topo/K’s
  • Posterior corneal astigmatism

Toric IOL

  • 1. Confirm spherical power
  • 2. Confirm cylinder power
  • 3. Confirm axis
  • 4. Align toric
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SLIDE 4

12/3/2016 4 Astigmatic Keratotomy (Manual)

  • 1. Measure post IOL
  • 2. LRI (x 2) with real time

refraction

  • 3. Measure post LRI
  • 4. Lengthen if needed

Pre LRI Post LRI

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Pre LRI Post LRI Preop Pre LRI Post LRI

20

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1. Head tilt with topography/keratometry

  • 2. Data transfer (office – O.R.)
  • 3. Mark patient (sitting up, preop area, level marks)
  • 4. Identify axis O.R. (cyclotorsion, degree gauge)
  • 5. Pen marks – 5 degrees wide, faded

Biometry and keratometry Pre-op marking 180 axis Manual data transfer from

  • ffice to OR

Surgical marking

  • f target axis

Toric IOL alignment

camera

Callisto

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Callisto

180 axis

90

26 27 28

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29

18.0 D

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camera

Markerless

  • 1. Office Workflow

No 2nd imaging instrument Data stored IOL Master/Forum

  • 2. Surgery Workflow

No preop marking No surgical axis marking

  • 3. Accuracy

Toric / LRI axis alignment MF centration CCC diameter

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SLIDE 12

12/3/2016 12

A B C

A Lens Power Prediction

  • A proprietary histogram

indicates confidence of IA refraction and lens diopter predictions calculated by our exclusive HOLOS Barrett IOL Formula™ B Qualified Quantitative Data

  • Provides refractive data,

including sphere, cylinder, axis, lens diopter , spherical equivalent and expected postop refraction. C Qualitative Data

  • Refractive information is also

shown as a dynamic qualitative display superimposed over a live video of the patient’s eye. PN 99-100370 09/16