Capsular bag performance of a hydrophobic acrylic 1-piece intraocular lens

To compare parameters after 1-piece and 3-piece intraocular lens (IOL) implantation.

Moorfields West End Clinic, London, United Kingdom, and Hanusch Hospital, Vienna, Austria.

Prospective randomized controlled trial.

Each eye of patients having bilateral surgery for age-related cataract was randomized to have implantation of a 1-piece IOL (Tecnis ZCB00) or a 3-piece IOL (Tecnis ZA9003). Changes in visual acuity, refraction, and anterior chamber depth (ACD) were evaluated during a 2-year follow-up. Intraocular lens tilt and decentration were evaluated using a Purkinje meter. Regeneratory posterior capsule opacification (PCO) was analyzed using retroillumination photographs in Automated Quantification of After-Cataract image-analysis software.

This study comprised 100 eyes of 50 patients. No statistically significant differences were found in IOL tilt or decentration between groups (P≥.06). Minimal but statistically significant changes were observed in the vertical tilt component 12 months postoperatively in the 3-piece IOL group (P<.01). The tilt and decentration components did not correlate with changes in sphere or the regeneratory PCO score (r = 0.38, P≥.06). The ACD decreased significantly between 1 day and 1 month postoperatively in both groups (P<.01), with no significant changes afterward (P≥.22). The anterior chamber was significantly deeper in the 1-piece group at all follow-up visits (P<.01).

Both the 1-piece IOL and the 3-piece IOL showed excellent positional stability in the capsular bag, resulting in good clinical outcomes. Regeneratory PCO levels were low and comparable between the IOLs.

No author has a financial or proprietary interest in any material or method mentioned.