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Aberrometry Insights for Eye Surgeons

This document summarizes a presentation on aberrometry and multifocal IOLs. It discusses different wavefront sensing technologies used in aberrometers. It also provides examples of measurements from a high resolution pyramid wavefront sensor aberrometer of different types of monofocal and multifocal IOLs, including analysis of centration, diffractive patterns, and add power values. In conclusion, the pyramid wavefront sensor proved highly sensitive with much higher spatial resolution than other technologies, providing very detailed and useful information, though the software needs further development to make the measurements more user friendly.

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106 views10 pages

Aberrometry Insights for Eye Surgeons

This document summarizes a presentation on aberrometry and multifocal IOLs. It discusses different wavefront sensing technologies used in aberrometers. It also provides examples of measurements from a high resolution pyramid wavefront sensor aberrometer of different types of monofocal and multifocal IOLs, including analysis of centration, diffractive patterns, and add power values. In conclusion, the pyramid wavefront sensor proved highly sensitive with much higher spatial resolution than other technologies, providing very detailed and useful information, though the software needs further development to make the measurements more user friendly.

Uploaded by

Shady
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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1/29/2018

ABERROMETRY AND MF IOLS:


WHAT WE CAN LEARN
FRANCESCO CARONES, MD
PHYSICIAN CEO AND MEDICAL DIRECTOR
CARONES OPHTHALMOLOGY CENTER, MILAN, ITALY

FINANCIAL DISCLOSURES

Francesco Carones, MD consults for the following companies:

• Alcon Laboratories (relevant to this presentation)


• CSO (relevant to this presentation)
• Johnson & Johnson Vision (relevant to this presentation)
• Slack (not relevant to this presentation)
• Vivior (not relevant to this presentation)
• WaveLight (not relevant to this presentation)

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WAVEFRONT SENSING TECHNOLOGY

• Hartmann-Shack (Autonomous, AMO-VISX)


• Tscherning (WaveLight)
• Slit-lamp scanning skiascopy (Nidek)
• Ray Tracing (Tracey)
• Pyramid Wavefront Sensor (CSO, Schwind)

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Relationship Slope and Light Intensity

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CSO OSIRIS ABERROMETER


Pyramidal Wavefront Sensor (PWS)
• Spatial resolution:
• 45.000 data point (Ø= 9.0 mm)
(1.500 other technologies)
• 4.500 data point (Ø= 3.0 mm)
(150 other technologies)
• Sensitivity:
• 4096 shades of gray

EXAMPLE: MONOFOCAL IOL, -2.00D

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EXAMPLE: MONOFOCAL IOL, -2.00D

Total aberrations

Low order High order


aberrations aberrations

EXAMPLES: PRESBYOPIA-CORRECTION DIFFRACTIVE IOLS

BIFOCAL (ReStor 3.0) TRIFOCAL (PanOptix) EDOF (Symfony)

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EXAMPLES: PRESBYOPIA-CORRECTION REFRACTIVE IOLS

Zonal Refractive (ReZoom) Pos/Neg SA (MINIWELL) Segmental Refractive (MPlus)

CLINICAL EVALUATION IN EYES IMPLANTED WITH


PRESBYOPIA-CORRECTING IOLS
120 implanted eyes, 1-12 months after surgery
• 40 Alcon PanOptix (trifocal, diffractive)
• 40 J&J Vision Symfony (EDOF, diffractive echelette)
• 20 Alcon ReSTOR 3.0 (bifocal, diffractive)
• 10 Alcon ReSTOR 2.5 (bifocal, diffractive)
• 10 SIFI MiniWell (EDOF, positive/negative spherical aberration)

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MAIN OUTCOMES – CENTRATION

Measurement in relation to the visual axis or center of the pupil


• Impact of decentration on PSF and Simulated Visual Acuity

MAIN OUTCOMES – DIFFRACTIVE PATTERN

Optical design detection in 100% of IOLs


• Central area diameter and focus
• Number of diffractive steps
• Dioptric value of add power
Energy

Distance 1/120 1/60 1/40 1/Focal


0th 1st 2nd 3rd distance

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MAIN OUTCOMES – ADD POWER

Measurement of the dioptric range and multifocality


• Dioptric range
• Peak to valley

ReSTOR 3.0 Symfony MiniWell PanOptix

AD INTERIM CONCLUSIONS

The Pyramid Wavefront Sensor (PWS) proved highly sensitive and with a
much higher spatial resolution than the other wavefront sensors
• Much more detailed measurements
• Very useful information
The software needs to be developed as to make all measured information
more user friendly for researchers and clinicians

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