VITREOUS-STABILIZING, SINGLE-PIECE, MINI-LOOP, PLATE-HAPTIC SILICONE INTRAOCULAR-LENS

Purpose: To evaluate the clinical and visual results of the Medevec VS 5 intraocular lens (IOL) with mini-loops, determine the incision size required for its implantation and its usable optical zone size, and co mpare the sizes with those of other foldable lenses. Setting: Ophthalm ology Department, St. Johannes Hospitals, Dortmund, Germany. Methods: The VS5 lens was folded with a forceps and implanted into an intact ba g in 27 patients; incision Size was measured. Postoperatively, centrat ion was recorded after dilation and the lens periphery observed to asc ertain whether the loops were fixed in the capsular bag. Postoperative A-scans were done in 22 eyes, and the preoperative and postoperative vitreous cavity lengths were compared. The size of the optical zone wa s compared with that of other foldable lenses. Results: Forceps implan tation of the VS5 lens required a 2.7 to 3.0 mm incision; all lenses w ere fixated in the bag. A-scans in 22 eyes showed that the vitreous ca vity was shortened by an average of 0.51 mm. Uncorrected visual acuity was 20/40 or better in 96% of eyes. One week postoperatively, the IOL s remained centered and there was no flare or cells. The usable optica l zone was larger than that of the staked long-loop lenses. Conclusion : The Medevec VS5 fixated in the bag, consistently locating in the pos terior bag space and stabilizing the vitreous. It had a full 5.0 mm op tical zone and could be implanted through an incision smaller that tha t required by other foldable IOLs.