1. Retina. 2010 Jan;30(1):131-9.

Secondary iris claw intraocular lens implantation for the correction of aphakia
after pars plana vitrectomy.

Acar N, Kapran Z, Altan T, Kucuksumer Y, Unver YB, Polat E.

Beyoglu Eye Research and Training Hospital, Istanbul, Turkey.
nur.nuracar@gmail.com

PURPOSE: The purpose of this study was to evaluate the safety and efficacy of
iris claw intraocular lens implantation for correction of aphakia in
vitrectomized eyes without capsular support. METHODS: This was a prospective
interventional case series. Twelve aphakic vitrectomized eyes without capsular
support underwent iris claw intraocular lens implantation. The main outcome
measures were changes in uncorrected visual acuity, best-corrected visual acuity,
spheric equivalent, corneal endothelial cell density, corneal thickness, central 
macular thickness, and complications. RESULTS: Mean follow-up was 15.58 +/- 3.80 
months with no intraoperative complications. Postoperatively, uncorrected visual 
acuity increased significantly at all follow-up visits (P < 0.05). Mean
best-corrected visual acuity increased 10 letters/2 lines at the final follow-up 
visit (P = 0.023). Mean postoperative spheric equivalent at the last visit was
-1.68 +/- 063 D, and the spheric equivalent was within +/-2.00 D of emmetropia in
9 (75%) eyes. Mean central macular thickness increased only at postoperative
Month 3 (P = 0.043). Mean endothelial cell density loss was 23.87% at the last
visit. Mean corneal thickness did not change during follow-up (P > 0.05). No
corneal edema was observed. Complications were transient intraocular pressure
increase (n = 1), cystoid macular edema (n = 1), and haptic dislocation replaced 
by surgery (n = 1). Retinas remained attached in all eyes. CONCLUSION: Secondary 
iris claw intraocular lens implantation is clinically safe and effective to
correct aphakia in vitrectomized eyes without capsular support. Larger studies
with longer follow-up are warranted.

PMID: 19834354 [PubMed - indexed for MEDLINE]