Take-home message: A new image-guided system streamlines surgical planning for patients undergoing cataract surgery with implantation of a single-piece aspheric IOL or a multifocal IOL.
Houston—Using a new image-guided system (Verion Image Guided System, Alcon Surgical) to plan cataract surgeries with implantation of a single-piece aspheric or multifocal IOL resulted in low residual refractive cylinder and good accuracy to target and refractive outcomes.
These initial results indicate the image-guided system is a valuable addition to the cataract surgery toolkit.
Stephen G. Slade, MD, and Kerry Solomon, MD, evaluated the system in an open-label, prospective, non-randomized, multicenter study that included 188 eyes.
All patients underwent femtosecond laser (LenSx)-assisted cataract removal during phacoemulsification. Any preoperative astigmatism was treated with astigmatic keratotomy.
Eighty-eight patients were implanted with a single-piece aspheric monofocal IOL (SN60WF, Alcon), and 100 patients were implanted with a multifocal IOL (AcrySof IQ ReSTOR IOL, Alcon).
The residual refractive cylinder, postoperative manifest refractive spherical equivalent (MRSE) accuracy to target, and the best-corrected distance visual acuity (BCDVA) (exploratory efficacy results) were recorded at three months postoperatively, according to Dr. Slade, private practice, Houston.
The primary study objection was evaluation of the clinical results as measured by the percentage of the study population with 0.5 D or less of residual refractive cylinder three months postoperatively.
The secondary objectives were assessment of the outcome of the manifest refraction spherical equivalent (MRSE) compared with the targeted outcome of 0.5 D or less and a comparison of the keratometry readings, mean corneal curvature, and magnitude of astigmatism and description of the axis measured preoperatively.