Posters

Comparison between the real safe distance vs the simulated safe distance using anterior segment OCT in patients with phakic IOL according to iris configuration

Poster Details

First Author: L.Izquierdo Jr PERU

Co Author(s):    M. Camino   R. Zúñiga   K. Ruíz Montenegro   J. Camargo   C. Maldonado   M. Henriquez     

Abstract Details

Purpose:

To compare the real safe distance (RSD) versus the simulated safe distance (SSD) to the endothelium prior and after iris-claw phakic IOL (pIOL) implantation according to iris configuration assessed pre and postoperatively with the anterior segment OCT (AS-OCT).

Setting:

Oftalmosalud, Lima, Perú.

Methods:

Prospective, cohort study included 60 eyes of 35 patients, who underwent iris-claw pIOL implantation (Artisan,Ophthec) for surgical correction of myopia at Oftalmosalud Instituto de Ojos, Perú, between July 2016 to July 2018.The SSD preoperatively was assessed using AS-OCT and the postoperative RSD was assessed after 1 month of pIOL implantation. Safe distance was defined as the distance between the edge of the optic (simulated or real) to the endothelium. Eyes were divided into 3 groups: plane, concave and convex according to pre-operatory iris configuration. Statistical analysis was performed using the R program, Wilconcox signed rank test and Kruskal Wallis test.

Results:

Mean difference between simulated and real safe temporal distance was -0.3937± 0.3824, -0.073±0.317 and -0.2421±0.3297mm in the concave, convex and plane group respectively. There were statistical significant differences between simulated and real temporal distance in the concave and plane group (p=0.001 and p=0.001 respectively). Mean difference between simulated and real safe nasal distance to the endothelium was 0.41±0.42, -0.20±0.39 and -0.18±0.30mm in the concave, convex and plane group respectively. There were statistical significant differences between simulated and real nasal distance in the concave and plane group (p=0.001 and p=0.002 respectively).

Conclusions:

There were significant differences between simulated and real safe distance in the concave and plane group when evaluation patients with iris-claw phakic IOL.

Financial Disclosure:

None