Intraocular lens capture in combined cataract extraction and pars plana vitrectomy: comparison of 1-piece and 3-piece acrylic intraocular lenses.

PURPOSE

To report and compare the incidence of pupillary capture and posterior synechiae formation after combined cataract extraction and pars plana vitrectomy (PPV) with a 1-piece versus a 3-piece acrylic intraocular lens (IOL).

SETTING

Royal Alexandra Hospital Eye Clinic, University of Alberta, Edmonton, Alberta, Canada.

DESIGN

Comparative case series.

METHODS

Consecutive patients who had combined cataract extraction with PPV were retrospectively reviewed. The outcomes in patients who received a 1-piece acrylic IOL and those who received a 3-piece acrylic IOL were compared. The proportion of patients with pupillary IOL capture and/or posterior synechiae postoperatively was recorded.

RESULTS

The cohort comprised 145 patients. All cases of IOL capture occurred in eyes with a 1-piece IOL (n = 7; 7.7%); the difference between the 1-piece IOL group and the 3-piece IOL group was statistically significant (P = .043). There was no significant difference between the 2 IOL types in the rate of posterior synechiae formation. Regression analysis showed that the odds of posterior synechiae formation were significantly higher in cases in which perfluoropropane (C(3)F(8)) (odds ratio [OR], 24.01; P = .006), sulfur hexafluoride (SF(6)) (OR, 25.23; P = .007), or silicone oil (OR, 47.78; P<.001) was used.

CONCLUSIONS

The incidence of IOL capture was significantly greater after implantation of a 1-piece IOL than after implantation of a 3-piece IOL during combined cataract extraction and PPV. Posterior synechiae formation was associated with the use of silicone oil, SF(6), or C(3)F(8).