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Initial European experience with an intraoperative wavefront aberrometer to guide intraocular lens and implantable contact lens power selection and placement
Session Title: Intraoperative Biometry and Correction of Astigmatism
Session Date/Time: Monday 07/10/2013 | 08:00-10:00
Paper Time: 08:23
Venue: Main Lecture Hall (Ground Floor)
First Author: : P.Schraepen BELGIUM
Co Author(s): : E. Mertens
To review the first European experience with the ORA System (WaveTec Vision, Aliso Viejo, CA) using a variety of internationally available intraocular lenses (IOLs) and implantable contact lenses (ICLs).
Medipolis Eye Center
The ORA System provides intraoperative refractive information that enables surgeons to measure both aphakic and pseudophakic eyes in order to gather real-time refractive information. The resulting measurement can be used to ensure that the appropriate IOL/ICL power is implanted, guide the placement of toric IOLs/ICLs and counter or limbal relaxing incisions, as well as providing a final confirmation of refraction at the end of the surgical case.
Included in the analysis were the initial 41 cases performed in the first month of ORA System usage. In the first month, three different types of multifocal IOLs were implanted: the Finevision (PhysIOL), the M-plus (Oculentis/Topcon Europe) and the Presbysmart (Medicontur), as well as aspheric lenses from Cima Technology and toric ICLs (Staar Surgical). On a global basis, the ORA MAVPE (mean absolute value prediction error) was 0.33 +/- 0.29 D, with 49% within 0.25 D of the predicted postoperative spherical equivalent (SE), 79% within 0.50 D, 93% within 0.75 D and 97% within 1.00 D. Detailed results will be presented on all lenses used.
In our initial experience, we have found the ORA system to be very user friendly, with minimal time to adapt it into the surgical routine, as well as versatile as it managed different types of multifocal IOL designs, as well as ICLs.