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Tracey Technologies AAO 2004 Advisors Group Breakfast Tom Padrick, PhD Director of Engineering

Tracey Technologies AAO 2004 Advisors Group Breakfast Tom Padrick, PhD Director of Engineering. Baylor Clinical Study . 100 Eye Study – Comparison of Tracey Refraction Values with Manifest Refraction

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Tracey Technologies AAO 2004 Advisors Group Breakfast Tom Padrick, PhD Director of Engineering

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  1. Tracey Technologies AAO 2004Advisors Group BreakfastTom Padrick, PhDDirector of Engineering

  2. Baylor Clinical Study • 100 Eye Study – Comparison of Tracey Refraction Values with Manifest Refraction • Done Under Supervision of Mitch Weikert, MD and Doug Koch, MD Baylor College of Medicine, Houston

  3. Baylor Clinical Study (100 eyes) +7D -13D

  4. Baylor Clinical Study (100 eyes)

  5. Baylor Clinical Study

  6. Physical Object Testing • Study to determine accuracy and reproducibility of iTrace measuring spherical lenses, cylinder lenses, induced spherical and coma aberration and calibrated phase plates • Jim Schiegerling, PhD, Optical Science Center, University of Arizona, Tucson

  7. University of Arizona (Physical Testing)

  8. University of Arizona (Physical Testing)

  9. University of Arizona(Physical Testing)

  10. Accommodation Measurement withTracey Technologies iTrace • Only aberrometer that allows true distant and near point measurement (through instrument viewing) of wavefront and refraction (difference display shows accommodation) • Data show excellent agreement between iTrace measurements and standard pushup test over range of 1D to 4D of accommodation as tested by Dr. Adrian Glasser

  11. Variations inMapping AccommodativePower in the Natural Crystalline LensasMeasured byiTrace Horizontal Cyl Piston Vertical Cyl Coma

  12. Accommodation and Lenticular Aberrations Near Aberrations Far Aberrations Accommodative Power Horizontal Cyl Refraction Difference Map

  13. Accommodation and Lenticular Aberrations Near Aberrations Far Aberrations Accommodative Power Coma Refraction Difference Map

  14. Accommodation and Lenticular Aberrations Near Aberrations Far Aberrations Accommodative Power Vertical Cyl Refraction Difference Map

  15. 73 Year Old Male Crystalens Accommodative Arching Overall Refraction change is 0.5D but Central Cylinder 2.5 D adds Depth of Field to Enhance Accommodative Effect

  16. Accommodation Study • Planning a 300-500 eye study over a range of ages to measure “accommodation types” in natural crystalline lens as a function of age • Plan additional work with doctors and manufactures of accommodative IOLs

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