Posterior Iris‐Claw Intraocular Lens Implantation In Aphakic Post Vitrectomized Eyes: Visual Outcomes And Complications

To evaluate refractive outcome, anatomical outcome, complications of posterior chamber iris-claw aphakic intraocular lens (IOL) implantation after pars plana vitrectomy

The location of implantation of iris-claw IOL, the data have conflicting results. These IOLs could be applied to AC over the iris or retropupillary location. Retropupillary iris-claw lens is fixed to the mid-periphery of the iris, enclavation system allows centration of the IOL on the pupillary axis, further precision in IOL power calculation better with iris-claw fixation than with transscleral fixation, thus the paper evaluates the need for compliactions and visual outcomes of iris claw lenses

A retrospective analysis of consecutive 25 eyes of 25 pts (12 males & 13 females) without capsular support in which we performed posterior chamber iris‐claw implantation after pars plana vitrectomy. Retro‐pupillary iris claw lens were either implanted in the same procedure along with vitrectomy (15 eyes, Group A) or later in different procedure (10 eyes, Group B) in post vitrectomised eyes. Posterior vitrectomy procedures were performed with 23- or 25-gauge techniques for different associated anterior or posterior segment indications. Visual outcomes, anatomical outcome, stability of the implants, and complications were analysed.

Mean patient age 62.3 years(range, 21–78 years)groupA; 60.1 years (range, 19-80 years)group B. Mean follow-up time 4.12 months(range, 1-12 months).Group A 6 eyeslens dislocation aphakia(5traumatic, 1surgical) & 7IOL dislocation aphakia(3traumatic, 4 surgical).Group B 5 eyes lens dislocation aphakia(4 traumatic,1surgical)2 IOL dislocation aphakia(1traumatic,1surgical).Follow up mean post-operative best-corrected LogMAR visual acuity 0.244±0.25group A; 0.286±042 group Bwas statistically significant.Intergroup BCVA comparisons follow up were not statistically significant. Similarly within group spherical equivalent decreased statistically when compared to the preoperative values. Disenclavation &  no other signifiant complcations were noted

In summary posterior chamber iris-claw IOL implantation in aphakic eyes without capsular support in post vitrectomized is an effective, predictable and safe procedure