Evaluation of Image Guidance System During Cataract and Refractive Surgery
To compare cataract and intraocular refractive surgery outcomes following the use of an intraoperative digital image guidance system for implantation of premium intraocular lenses.
In this prospective, single-centre study intraoperative usability of a digital image guidance system (Verion, Alcon Inc.) as well as refractive outcomes following intraocular lens (IOL) surgery with premium lenses (toric, multifocal toric, phakic toric) implantation were evaluated. Postoperative refractive outcomes as well as IOL position in relation to planned implantation axis were evaluated.
Preoperative captured digital images of the anterior segment including details of scleral vessels and iris structures need to be of good quality in order to use them for intraoperative lens alignment. For toric IOLs (cylinder between 1D and 5.5 D, n=22) the median postoperative IOL rotation was 2° (range 0° to 7°) and no further surgical intervention was necessary. Multifocal toric IOLs as well as toric phakic IOLs were also evaluated and data will be presented.
Digital image guidance during cataract or intraocular refractive lens surgery can facilitate premium IOL implantation without preoperative corneal marking. Preoperatively captured images of eyes undergoing IOL surgery were usable for intraoperative image guidance in all cases. IOL position was close to the intended axis in all cases evaluated and no postoperative IOL rotation was necessary.