1 / 12

Importance of Oculign Eye Registration with ZEISS MEL 80 Laser

Ensure precise treatment positioning in the eye for optimal outcomes with Oculign Eye Registration. Address pupil centroid shift and torsion for effective astigmatism treatment using the advanced technology of ZEISS MEL 80 Laser. Discover the benefits of Oculign for enhanced surgical accuracy.

jjim
Download Presentation

Importance of Oculign Eye Registration with ZEISS MEL 80 Laser

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Importance of Oculign Eye Registration with the ZEISS MEL 80 LASER FRANK GOES MD GOES EYE CENTRE ANTWERP BELGIUM frank@goes.be

  2. Aim:  Exact positioning of customized treatment on the eye  Coincidence of diagnostic and treatment location CRS-MasterOcuLign Eye Registration • Compensates for: • Pupil centre shift between photopic and scotopic pupil size • Rotation of the eye between measurement and treatment Surgical image of MEL 80 eyetracker camera

  3. Two pictures are taken;one at the wavescan and one at the laser The software identifies Iris and Limbus details and matches the images Then the laser Rotates the axis of the treatment to compensate for the offset OcuLign- WASCA Wavefront Acquisition WASCA Reference Image MEL 80 Surgical Image

  4. Knorz et al: Review of Ophthalmology; 2006 Torsion in 10% of eyes more than 7° Ciccio et al: Journal of Refractive Surgery; 2005 Majority of eyes had torsion Mean: 4.05° More than 2°: in 68% eyes Kohnen et al: Cataract and Refractive Surgery today; 2006 Torsion: mean value 3.2° in 58% more than 2° IS THERE ANY TORSION?

  5. THE HIGHER THE ASTIGMATISM THE MORE EFFECT TORSION MISALIGNMENT WILL HAVE

  6. DO TORSION AND PUPIL SHIFT CHANGE DURING TREATMENT? • WE MEASURED 100 CONSECUTIVE EYES • BEFORE THE MICROKERATOME CUT • AFTER THE MICROKERATOME CUT • AT END OF THE LASER TREATMENT

  7. 100 EYES RESULTS FOR TORSIONbefore cut Mean 3.3° Before Microkeratome Cut At least 5° in 32% At least 10° in 7%

  8. 100 EYES RESULTS FOR OFFSETbefore cut Before Microkeratome Cut At least 0,25 mm in 30% At least 0,25 mm in 10%

  9. PUPIL OFFSET CHANGE DURING TREATMENT More than 0.2 mm in only 5 % More than 0.2 mm in only 2 %

  10. TORSION CHANGE DURING TREATMENT Mean 1.3° More than 3° in only 5%

  11. RESULTS TREATMENT ASTIGMATISM USING OCULIGN 28 EYES

  12. OCULIGN CONCLUSION • ...PUPIL CENTROID SHIFT AND TORSION ARE ADDRESSED BY THE LIMBUS TRACKER. • 30% OF EYES HAVE MORE THAN 5° STATIC TORSION AND MORE THAN 0.25 MM OFFSET BEFORE TREATMENT • ONCE INSTALLED TORSION AND OFFSET DOES NOT CHANGE ANYMORE • ASTIGMATISM TREATMENT USING OCULIGN IS HIGLY EFFICIENT •  OCULIGNTM IS the right way to go

More Related