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Iris claw phakic lens implantation: refractive outcomes and safety during the surgeon's learning curve

Poster Details

First Author: R.Fernandez-Buenaga SPAIN

Co Author(s):    J. Alio                    

Abstract Details


To analyze the outcomes achieved after the first implantation cases of phakic iris claw lenses by the same surgeon. Refractive accuracy, success and safety of the procedures are studied.


Vissum Corporation, Alicante, Spain


Retrospective study of consecutive cases, starting with the first implantion case of Artiflex spherical or toric iris claw phakic lenses for the correction of myopia and astigmatism. The first implantation surgery was performed in January 2012 and the last one in October 2014. The outcomes at the 3 months follow up visit were analyzed. All the eyes included had stable refraction at least for the last year and were not suitable for corneal refractive surgery. Complete ophthalmological examination was performed to ensure adequate anatomic conditions for phakic lenses implantation. The outcomes are shown as median (P25;P75 ).


21 eyes from 11 patients were studied. The median (P25;P75 ) preoperative spherical equivalent (SE) was -9.25 (P25-10.06; P75-7.68) diopters. The postoperative median SE was -0.25 (P25-0.43; P750) diopters. The preoperative endothelial cell count was 3216 (P252838.75; P753433.25] cells/mm² while the postoperative was 2927.5 (P252380.75; P753367] cells/ mm² (p=0.005). The median efficacy and safety indexes were 1 [0.93-1.03] and 1 [1.02-1.14] respectively. Regarding the predictability, a final SE of ± 0.5 diopters was achieved in 19 out of 21 eyes (90.47%). A second surgery was needed in 2 eyes to improve IOL centration.


Outcomes of iris claw phakic lenses during the surgeon learning curve show high predictability with excellent efficacy and safety indexes. In 2 eyes, a second surgery to improve IOL centration was needed. This occurred at the beginning of the learning curve, in the first 5 surgeries. The median endothelial cell loss associated to the procedure during the learning curve was 288.5 cells/mm2.

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