Aphakic refraction Aphakic refraction Spherical power - PowerPoint PPT Presentation

Jul 31, 2023 •144 likes •280 views

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.:

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.: 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 2 • • Aphakic refraction Aphakic refraction • • Spherical power calculation Spherical power calculation • • Cylindrical power and axis Cylindrical power and axis • • Pseudophakic refraction Pseudophakic refraction • • Confirm spherical power ??? Confirm spherical power ??? • Adjust cylinder treatment • Toric axis • Astigmatic keratotomy 1
12/3/2016 Population Outcomes N 246 1. Post LASIK/PRK – spherical 2. Toric – sphere/cylinder/axis 3. Astigmatic Keratotomy 4. Multifocal 2
12/3/2016 • Axis Alignment – Preop target • Discrepency – topo/K’s • Proper head alignment by staff (topo, K’s) • Ink marks aligned? Toric IOL • Effect of incision 1. Confirm spherical power • Cylinder power 2. Confirm cylinder power • Discrepency – topo/K’s 3. Confirm axis • Posterior corneal astigmatism 4. Align toric 3
12/3/2016 Pre LRI Astigmatic Keratotomy Post LRI (Manual) 1. Measure post IOL 2. LRI (x 2) with real time refraction 3. Measure post LRI 4. Lengthen if needed 4
12/3/2016 Pre LRI Preop Post LRI Pre LRI Post LRI 20 5
12/3/2016 Manual data Biometry and Pre-op marking Surgical marking Toric IOL transfer from keratometry 180 axis of target axis alignment office to OR camera 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 Callisto 6
12/3/2016 90 Callisto 180 axis 26 27 28 7
12/3/2016 29 18.0 D 8
12/3/2016 9
12/3/2016 10
12/3/2016 Markerless camera 1. Office Workflow No 2 nd 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 11
12/3/2016 C A B A B C Lens Power Prediction Qualified Quantitative Data Qualitative Data •Provides refractive data, • A proprietary histogram • Refractive information is also including sphere, cylinder, axis, indicates confidence of IA shown as a dynamic lens diopter , spherical refraction and lens diopter qualitative display equivalent and expected postop predictions calculated by our superimposed over a live refraction. exclusive HOLOS Barrett video of the patient’s eye. PN 99-100370 IOL Formula™ 09/16 12

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