Cost of itrace abberometer full#

NO COMPROMISES!Ģ6 Baylor Clinical Study (100 eyes) by Doug Koch, MDĢ7 Validation Studies Three independent studies of

Cost of itrace abberometer full#

All points in any pupil size (2-8mm) each with full dynamic range (+/- 15 D). Rapid, point-by-point analysis of 256 data points avoids data confusion associated with simultaneous data measurements, therefore, all eyes (highly irregular) can be measured. X, µm 20 10 -10 -20 Y, µm 40 30 Refraction Map Retinal Spot Diagram Wavefront Map Ablation MapĢ5 Tracey’s Key Advantage: NO COMPROMISES! Internal Optics Aberrations Corneal Aberrations Total Ocular Aberrations *Measuring Corneal Aberration without Lens or Total Aberration is of Questionable Valueġ7 Principles of Tracey Programmable thin beam ray tracing measuring forward aberrations of the eye Rapid sequential measurement of data points over entire entrance pupil (<50ms) Localization of each reflected retinal spot Integration of individual retinal spots to form Point Spread Function (PSF) Analysis of PSF for higher order aberrations and other data formatsĢ1 Overlay of Two Sets of Site ConfigurationĢ3 Retinal Spot Diagram/Point Spread FunctionĢ4 Data Displays Retinal Spot Diagram Refraction Map Ablation Map Measures Multiple Points at Once (slit) and only in Perpendicular Direction Limited WF measurement (axial bias) No Open Field Fixation – Problem of instrument myopia in young patients Measures All Points at Once Data Confusion, Compromised Resolution Limited Dynamic Range – Cannot Measure Highly Irregular Eyes Highly Sensitive to Noise – Slow, Requires Multiple Scans Expensive Components – High Cost to Purchase and Repair H-S Measures Reverse Aberrations – Not Physiologic with Real Vision especially for High Orders in Accomodation Tscherning Needs 2-D Imaging of Retina Additional noise and errorsġ4 Disadvantages of Differential Skiascopyĭoes NOT Measure Skew Aberrations – Inaccurate WaveFront especially for Trefoil, Quadrafoil, etc. H/S Photo of patient with tight eye lid courtesy David Williams

Hartmann-Shack Lenslet Array Tscherning Aberrometer Differential Skiascopy Ray Tracing Features: -Rapid, point by point, IR measurement no data confusion -Pupillometry with auto-tracking/capture -Programmable sampling (256 pts.) in any pupil up to 8mm -Open Field Fixation – avoid instrument myopia and measure Accommodation -Corneal Topography integration – able to measure Lens Aberrations No accommodation Fixed alignment Digital image processing Man-made Accommodation Changing fixation Brain image processing Nature-made TELESCOPE On-Axis design High magnification Fixed aperture Constant detector res. Off-Axis design No magnification Variable aperture Variable detector res. Night Myopia) Refraction is NOT a FIXED Number! Effects Refraction (Instrument Myopia) Effects Quality of Vision (Aberrations) Where are the Sources of Aberrations? How do they change with Surgery? Cornea: Lens: Astigmatism (Irreg.), Sph & other HOA Astigmatism, Coma & other HOA Pupil Size: Accommodation: Tear Film: Effects Refraction (ex. Vasyl Molebny, DSc Kiev, Ukraine Ioannis Pallikaris, MD Crete, Greece Canadian & Swedish Governmentsģ Why Aberroscopy? Current Laser Technology Permits One to Go Beyond Correction of Sphere and Astigmatism You Can Now Address Your Patient’s Quality of Vision High Order Aberrations Define Quality of VisionĤ Why Ray Tracing? Because… the Eye is NOT a Telescope!

Wakil, MD - Tracey Technologies, LLC EyeSys Vision, Inc. 1 Integration of Aberrometry and Topography with the i Trace System